Dare to Know: Recent Episodes
David Morton Rintoul
Dare to Know is a podcast published by David Morton Rintoul offering feature stories aimed at those who find meaning in understanding our universe, our place in nature and our humanity.
Wishful thinking, or dismissing beliefs that make us uncomfortable, even if they’re true, is a common human weakness. Find out how a new study examined how we tend to avoid thinking about negative consequences and how we can learn to manage this familiar tendency.
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Ice cap melting is one of many adverse results of global warming and climate change. Find out how the flow of meltwater from Earth’s poles to its equator is affecting our planet’s rotation rate and how our atomic clocks measure time.
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The Milky Way’s origins have puzzled scientists since we first realized its one of countless galaxies in our universe. Find out how scientists have applied information from the Gaia Space Observatory and the Sloan Digital Sky Survey to uncover two of our galaxy’s earliest star streams.
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Memory has puzzled scholars since the dawn of civilization. Find out how new research shows that spacing out study periods, along with varying the context of the item we’re trying to remember, improves our memories.
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Bumblebee hives can provide fascinating insights into animal behaviour in groups. Find out how a new study suggests that bees can learn complex, multi-step tasks through social interaction.
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Odysseus is the name of the first American spacecraft to land on the moon in 52 years. Find out how its missions succeeded despite enduring and overcoming some demanding challenges and setbacks.
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Robots with AI (artificial intelligence) are emerging as developers combine large language models (LLMS) with autonomous devices. Find out why they’re discovering that it takes far more than linguistic skills to replicate basic human abilities.
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Migratory species are the subject of a new report presented at the United Nations this week. Find out why populations of migratory animals are declining, and what scientists recommend to conserve and sustain these threatened species and their habitats.
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Black holes and galaxies existed together during the first one percent of our universe’s existence. Find out why this upends conventional thinking on how stars, galaxies and black holes formed after the Big Bang.
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Brain cells have a remarkable capacity to organize themselves. Find out how a new study explains the strikingly simple networking processes behind these vital connections.
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White rhino extinction has reached the point where there are only two of the animals left on Earth. Find out how a team of veterinarians and conservationists has found a way to rescue this species using in vitro fertilization and embryo transfer.
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Artemis II is NASA's planned, crewed mission to return to the moon. Find out why NASA has rescheduled the space flight and the delay’s implications for an eventual crewed lunar landing.
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Cultural evolution refers to the way humans create tools and social systems to adapt to and shape their environments. Find out how the tension between our cooperative and competitive natures may be preventing us from solving the ecological crisis humanity faces.
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Photosynthesis evolution remains a mystery to biologists. Find out how a new study sheds light on our understanding of this critical organic process by pushing the timeline of its origins back by over a billion years.
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A military space plane called the Boeing X-37B blasted off from the Kennedy Space Center this week. Find out more about its secretive mission, and why it creates unnecessary tension between the United States and China.
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Prehistoric herders in the high mountains kept small, diverse animal herds. Find how a new study reveals that their animal husbandry practices were far more sophisticated than previously thought.
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COP 28 was a UN conference on climate change that wrapped up this week. Find out why many observers believe the results don’t go far enough and that the parties’ commitments are too vague to seriously address the climate crisis.
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The heaviest chemical elements in the universe come from neutron stars. Find out how a new study shows that this process creates heavier atoms than anything we experience on Earth.
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Our sense of smell is often overlooked when we consider the tidal wave of artificial intelligence applications. Find out how a new machine-learning model can predict how a new chemical compound will smell without involving humans.
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COP 28 is the upcoming UN conference on climate change. Find out why the mood leading into this global gathering is a blend of frustration, scepticism and just a faint trace of wary hope.
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Blobs in the Earth’s interior mantle have been puzzling geologists for decades. Find out how a new study solves the mystery by linking them to an ancient planet that collided with Earth to form the Moon.
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Remembrance Day in Canada commemorates the veterans who gave their lives in the First and Second World Wars, Korea and Afghanistan. Find out the topics on which I found myself reflecting during this annual moment of silence.
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The carbon budget estimates how much more C02 we can emit into the atmosphere and still keep global warming below 1.5˚ C. Find out why a new study found that we only have a 50% change of meeting our climate targets.
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Space junk is the debris left behind from spent rocket stages and defunct satellites. Find out why the discovery of space junk particles in the stratosphere has implications for our environment and climate.
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The Gaza crisis has captured everyone’s attention over the past couple of weeks. Find out why the roots of the conflict, and its solutions, lie in all parties understanding and respecting universal human rights.
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“Survival of the boring” describes a traditional view that evolution favours unremarkable, generalist species over innovation. Find out how a new study challenges that assumption by showing that diversity and innovation often drive evolutionary success.
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The Orion Nebula is one of the most studied areas of star formation in the galaxy. Find out how the new James Webb Space Telescope has revealed previously unknown objects that defy our understanding of how stars and planets form.
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The Indonesian hunter gatherers known as the Punan Batu have their own, secretive language that they sing instead of speaking. Find out how this trait, combined with their unique genetic background, gained them official recognition and legal rights as Indigenous peoples.
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The Earth Species Project is using artificial intelligence (AI) to understand how animals communicate. Find out how learning to “talk to the animals” could boost animal conservation and welfare around the world.
Check out the Dare to Know Website at
daretoknow.ca
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NASA appointed a new director of Unidentified Anomalous Phenomena (UAP) research this week. Find out what this new role entails and what NASA hopes to contribute by studying these anomalies.
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“Music is the universal language,” we often hear, but how true is that maxim? Find out how a new study shows that people from diverse cultures can recognize the emotions expressed in songs.
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Carbon offsets allow businesses and wealthy individuals to buy credits to compensate for failing to meet their carbon emission targets. Find out why the system isn’t helping the planet, and the reforms needed to make this emerging marketplace effective.
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Lunar missions made the news twice this week, but for very different reasons. Find out why India is celebrating a technological triumph, while Russia is downplaying a catastrophic failure.
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Climate Justice is the name of a movement recognizing the climate crisis as a threat to social justice. Find out why human rights group Amnesty International has issued a detailed policy briefing on global warming.
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Hydrothermal vents are underwater springs that form on the ocean floor. Find out how an international scientific expedition surprised even themselves when they uncovered a new kind of ecosystem beneath one of these formations.
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A giant exoplanet has been discovered orbiting a low-mass star. Find out why this finding challenges our understanding of planet formation and helps scientists decipher the origins of solar systems, including our own.
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Russia’s invasion of Ukraine has led to investigations of genocide, war crimes, crimes against humanity and crimes of aggression. Find out why the International Criminal Court and UN Independent Commission of Inquiry are working to hold Russian authorities accountable.
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A galaxy without dark matter has come to light in the constellation Perseus. Find out why this poses a puzzle for astronomers and challenges cosmology’s explanation of how our universe began.
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Creative people enjoy their idle time, and it’s often when fresh ideas inspire them. Find out how a new study shows we need to find time to relax with our thoughts in this hectic, digital age.
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Animal origins have puzzled biologists ever since Darwin documented the process of natural selection. Find out how a new study of how fossils form helps scientists establish when animal life first arose on Earth.
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The Euclid Space Telescope’s mission is to explore the composition and evolution of dark energy. Find out how its observations of over a billion galaxies aim to solve what scientists call cosmology’s greatest mystery.
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Genius is an idea that humanity has accepted since the dawn of civilization. Find out why some scholars question the validity and value of the concept, with some even viewing it as a potential danger for society.
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“Anthropocene epoch” is the term for a proposed geological era to represent the influence modern humanity has on our planet. Find out why a picturesque lake near Milton, Ontario is the chosen site to represent this new epoch.
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Wildfire season in Canada runs every year from May through October. Find out why climate change is making this year’s forest fires the most intense and destructive ever recorded.
Also available as a text blog at daretoknow.ca/2023/06/10/wildfire-season-in-canada-and-climate-change/
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Dying brains of some animals and humans show some remarkable brain wave activity. Find out why researchers want to find out if these readings indicate some form of near death experience or hidden consciousness connected to the end of life.
Also available as a text blob at http://daretoknow.ca/2023/05/27/dying-brains-may-experience-surge-of-consciousness/
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Dying brains of some animals and humans show some remarkable brain wave activity. Find out why researchers want to find out if these readings indicate some form of near death experience or hidden consciousness connected to the end of life.
Also available as a text blog at http://daretoknow.ca/2023/05/27/dying-brains-may-experience-surge-of-consciousness/
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Environmental DNA (eDNA) comes from the traces of genetic material organisms shed as they go about their lives. Find out how our ability to analyze human eDNA samples is a mixed blessing for the fields of ecology and forensics.
Also available as a blog at http://daretoknow.ca/2023/05/20/environmental-dna-poses-scientific-and-ethical-dilemmas/
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Mars exploration was in the headlines for several reasons during the month of April. Find out the latest exploits of NASA’s Ingenuity, Curiosity and Insight rover missions on the Red Planet.
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Brain scans from a recent study enabled scientists to decode what people were thinking. Find out how the researchers used artificial intelligence to read minds, and how this new technology might help people who can’t speak or even change how we all communicate.
This episode is also available as a blog post: http://daretoknow.ca/2023/05/08/brain-scans-enable-scientists-to-read-minds/
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Quasar origins have been a mystery to astrophysicists since they discovered these quasi-stellar radio sources sixty years ago. Find out how a team of researchers discovered that quasars ignite when galaxies collide.
This episode is also available as a blog post: http://daretoknow.ca/2023/04/29/quasar-origins-explained-by-studying-distant-galaxies/
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Dismal progress reports from Canada’s Commissioner of the Environment and Sustainable Development and the UN Secretary-General tarnished Earth Day festivities this year. Find out why the status of climate change and mass extinctions is nothing to celebrate.
This episode is also available as a blog post: http://daretoknow.ca/2023/04/22/dismal-progress-reports-cause-earth-day-frustrations/
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Amnesty International has just released its annual report on the state of the world’s human rights. Find out how it assesses human rights in 156 countries, including Canada.
This episode is also available as a blog post: http://daretoknow.ca/2023/04/15/amnesty-international-state-of-worlds-human-rights/
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Tiger personalities are as distinctive as those of humans, according to a new study. Find out how this clarifies the nature versus nurture debate and can improve nature conservation efforts.
This episode is also available as a blog post: http://daretoknow.ca/2023/04/08/tigers-personalities-are-unique-study-finds/
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Gamma-ray bursts are explosions so powerful they outshine our entire galaxy. Find out how scientists detected the brightest gamma-ray burst ever observed, and what it means for our understanding of the universe.
This episode is also available as a blog post: http://daretoknow.ca/2023/04/01/brightest-gamma-ray-burst-ever-unveils-cosmic-mysteries/
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A UN Report released this week contained even more dismal news about the climate crisis. Find out why the UN chief responded by saying, “It’s time to end the relentless — and senseless — war on nature.”
This episode is also available as a blog post: http://daretoknow.ca/2023/03/25/un-report-calls-for-urgent-climate-action/
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Blood and Mistletoe is a book about the Druids by Professor Ronald Hutton. Find out why the fact that we know next to nothing about the Druids is what makes them fascinating.
This episode is also available as a blog post: http://daretoknow.ca/2023/03/18/blood-and-mistletoe-a-review/
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Kiska, Canada's last captive orca, died this week at Marineland after twelve years of isolation. Find out why animals rights groups want Marineland prosecuted, and how Kiska's story reflects changing attitudes toward our treatment of animals.
This episode is also available as a blog post: http://daretoknow.ca/2023/03/11/kiska-canadas-last-captive-orca-has-died/
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Massive early galaxies emerged from a review of the James Webb Space Telescope’s first dataset. Find out why current science says they shouldn’t exist, and what this means for our understanding of the Big Bang and galaxy formation.
This episode is also available as a blog post: http://daretoknow.ca/2023/03/04/massive-early-galaxies-discovery-could-be-universe-breakers/
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European archery was thought to have orginated about 11,000 years ago. Find out why a new discovery places that date another 40,000 years into the past.
This episode is also available as a blog post: http://daretoknow.ca/2023/02/25/european-archery-40000-years-older-than-thought/
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The mother tree hypothesis suggests that trees form networks to share resources and communicate using fungi growing in their roots. Find out why a new study questions the evidence for this idea and calls for better expermients to uncover the truth.
This episode is also available as a blog post: http://daretoknow.ca/2023/02/18/mother-tree-skeptics-call-for-more-study/
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UFOs, or UAP as researchers now call them, are no longer viewed with complete derision by science. Find out why some in the scientific and intelligence communities now think unidentified aerial phenomena might be worthwhile research topics.
This episode is also available as a blog post: http://daretoknow.ca/2023/02/11/ufos-becoming-legitimate-research-topic-for-scientists/
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The Agricultural Revolution took place about 12,000 years ago and brought many benefits. Find out how the lifestyle changes humanity embraced then also led to the conflict, disease, fitness and nutrition issues we cope with today.
This episode is also available as a blog post: http://daretoknow.ca/2023/02/04/agricultural-revolution-still-affects-humanitys-modern-life/
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Earth’s inner core appears to be slowing down relative the speed of our planet’s rotation on its axis. Find out how this affects our magnetic field and shortens the length of a day on our world.
This episode is also available as a blog post: http://daretoknow.ca/2023/01/28/earths-inner-core-falling-behind-planets-rotation/
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The DART Mission involved sending a spacecraft to collide with an asteroid. Find out how it demonstrated the feasibility of NASA’s planetary defense strategy and exceeded expectations.
This episode is also available as a blog post: http://daretoknow.ca/2023/01/21/dart-mission-follow-up-a-smash-hit/
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Human Rights Watch has released its“annual review of human rights around the globe.” Find out why Human Rights Watch described the year as a “litany of human rights crises.”
This episode is also available as a blog post: http://daretoknow.ca/2023/01/13/human-rights-watch-condemns-litany-of-human-rights-crises/
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Photosynthesis signaling within plant cells is fundamental to life. Find out how a new discovery explains what triggers the process, potentially boosting crop yields and even helping cure cancer.
This episode is also available as a blog post: http://daretoknow.ca/2023/01/06/photosynthesis-signaling-may-boost-crops-cure-cancer/
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A doomed planet orbiting an aging star has been observed for the first time. Find out what this discovery can contribute to our search for life on other worlds.
This episode is also available as a blog post: http://daretoknow.ca/2022/12/30/doomed-planet-may-foretell-earths-ultimate-fate/
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Domestic chores overwhelmingly fall to women in most households. Find out the psychology behind this disparity and why it doesn’t give men a free pass to avoid housework.
This episode is also available as a blog post: http://daretoknow.ca/2022/12/23/why-domestic-chores-matter-less-to-men/
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A UN biodiversity conference called COP15 has ended with a deal involving 196 countries. Find out why environmentalists are hailing it as a landmark agreement, and what it will take to put its terms in place.
This episode is also available as a blog post: http://daretoknow.ca/2022/12/19/biodiversity-conference-commits-to-protect-30-of-natural-world/
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Artemis I is NASA’s ongoing, uncrewed test mission to the moon and back. Find out what the mission has accomplished so far, and about the plans for slashdown this Sunday, December 11.
This episode is also available as a blog post: http://daretoknow.ca/2022/12/09/artemis-i-on-its-way-back-home/
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Music training has been a recognized mental health treatment since the dawn of time. Find out how a new study shows that learning to play an instrument improves our cognition while relieving depression, anxiety and stress.
This episode is also available as a blog post: http://daretoknow.ca/2022/12/02/music-training-improves-brain-function-and-mood/
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Reforestation plans play a central role in global strategies to solve the climate crisis. Find out why simply getting millions of saplings into the ground doesn’t deliver long-term success.
This episode is also available as a blog post: http://daretoknow.ca/2022/11/25/reforestation-plans-require-more-than-saying-plant-more-trees/
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Artemis I is a 26-day, uncrewed mission to travel around the moon and return to Earth. Find out how the powerful SLS rocket finally got off the ground and what the mission hopes to accomplish.
This episode is also available as a blog post: http://daretoknow.ca/2022/11/18/artemis-i-on-its-way-to-the-moon/
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Screen time worries many parents, who fear it interferes with social development. Find out why a new study shows that restricted Internet access is more detrimental to teen self-esteem.
This episode is also available as a blog post: http://daretoknow.ca/2022/11/12/screen-time-better-for-teens-than-disconnection/
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COP27, the UN’s annual meeting on climate change, starts November 6. Find out what’s on the agenda and why success at this gathering is essential to humanity’s future.
This episode is also available as a blog post: http://daretoknow.ca/2022/11/04/cop27-whats-at-stake-for-the-climate-and-the-planet/
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Dark energy is the term scientists use to describe the cause of the accelerated expansion of the universe. Find out how a new analysis provides its most precise measurement yet.
This episode is also available as a blog post: http://daretoknow.ca/2022/10/28/dark-energy-measured-more-precisely-than-ever/
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The Israeli Occupation of Palestine is the subject of a new report issued by the United Nations this week. Find out why it concludes that the occupation is illegal and what this means for the long-term resolution of the Israeli-Palestinian conflict.
This episode is also available as a blog post: http://daretoknow.ca/2022/10/25/israeli-occupation-of-palestine-violates-international-law-commission-of-inquiry/
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Urban green space improves quality of life for residents, but it can also create hot spots for criminal activity. Find out how a new study shows that overall, parks, gardens and fields lower crime risk.
This episode is also available as a blog post: http://daretoknow.ca/2022/10/16/urban-green-space-reduces-property-and-violent-crime/
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Ecosystem stability has three phases, a bit like ice, water and steam. Find out how a new study explains how ecologists could predict these phases by gathering only two simple pieces of information.
This episode is also available as a blog post: http://daretoknow.ca/2022/10/09/ecosystem-stability-determined-by-two-simple-factors/
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The DART mission successfully struck an asteroid 11 million kilometres away with a spacecraft. Find out why this achievement demonstrates how humanity could one day protect and preserve life on Earth.
This episode is also available as a blog post: http://daretoknow.ca/2022/09/30/dart-mission-demonstrates-nasas-planetary-defense-strategy/
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Nature walks are among the best ways to stay in shape. Find out why a new study found that strolling in natural settings also has essential mental health benefits.
This episode is also available as a blog post: http://daretoknow.ca/2022/09/23/nature-walks-benefit-both-mind-and-body/
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European rivers are at their lowest levels in over 500 years. Find out why this is a problem for the global economy and for ecosystems throughout Europe.
This episode is also available as a blog post: http://daretoknow.ca/2022/09/16/european-rivers-drying-up-from-climate-change/
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Spiraling stars in the Small Magellanic Cloud are the subject of a recent study in ‘The Astrophysical Journal.’ Find out how their spiral motions help explain the “baby boom” of star formation shortly after the Big Bang.
This episode is also available as a blog post: http://daretoknow.ca/2022/09/09/spiraling-stars-help-explain-early-universe/
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A beaver fossil found in western Montana is the oldest such specimen ever discovered. Find out how this 30-million-year-old missing link is helping to explain the astonishing diversity in mammal species on our planet.
This episode is also available as a blog post: http://daretoknow.ca/2022/08/26/beaver-fossil-sheds-light-on-mammal-evolution/
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A UN report holds China accountable for “serious human rights violations” in its Xinjiang province. Find out what the allegations entail and how China is responding to the findings.
This episode is also available as a blog post: http://daretoknow.ca/2022/09/02/un-report-cites-serious-human-rights-violations-in-china/
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*Lunar meteorites are very rare rocks that scientists sometimes discover in Antarctica or deserts. Find out how a new study of the trace gases they contain has shed light on the origins of the moon and the Earth.
Also available as a blog post at http://daretoknow.ca/2022/08/19/lunar-meteorites-help-explain-moons-formation/*
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James Lovelock passed away recently at the age of 103. Find out how his Gaia hypothesis led a generation to a new understanding of the world and our place in it.
This episode is also available as a blog post: http://daretoknow.ca/2022/08/12/james-lovelock-remembering-the-gaia-hypothesis-founder/
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Dwarf galaxies contain less than ten percent of the stars in the Milky Way. Find out how their behaviour in a region called the Fomax Cluster challenges dark matter's existence.
This episode is also available as a blog post: http://daretoknow.ca/2022/08/05/dwarf-galaxies-contradict-dark-matter-paradigm/
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A healthy environment is a human right and vital to the enjoyment of other rights, according to a new UN General Assembly resolution. Find out why this is both a cause for celebration and a call to action.
This episode is also available as a blog post: http://daretoknow.ca/2022/07/29/healthy-environment-a-human-right-un-declares/
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Monarch Butterfly populations have been devastated over the last past few decades. Find out why the IUCN had added these iconic pollinators to the endangered species list and how scientists are working to save them from extinction.
This episode is also available as a blog post: http://daretoknow.ca/2022/07/24/monarch-butterfly-added-to-engangered-species-list/
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The James Webb Space Telescope revealed its first four images this week. Find out what these images depict and their signifcance in understanding the universe and humanity's place within it.
This episode is also available as a blog post: http://daretoknow.ca/2022/07/15/james-webb-space-telescope-photos-are-spectacular/
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Planets with water are the main targets for scientists' search for life on other worlds. Find out how a new study shows that these planets can be very different from Earth.
This episode is also available as a blog post: http://daretoknow.ca/2022/07/08/planets-with-water-arent-always-earth-like/
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Older and Wiser is a book by Dag Sebastian Ahlander aimed at baby boomers who are planning their retirement. Find out how this lighthearted and entertaining read can help us boomers "create an inner peace and make us wiser."
This episode is also available as a blog post: http://daretoknow.ca/2022/07/01/older-and-wiser-a-book-review/
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Human-wildlife conflict is becoming an increasing concern as human activity encroaches on natural habitats due to climate change. Find out how a new study involving elephants shows how we can plan for and minimize these tensions in the future.
This episode is also available as a blog post: http://daretoknow.ca/2022/06/24/human-wildlife-conflict-aggravated-by-climate-crisis/
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Planetary formation made the news in three different ways this week. Find out how surprising results from studies of a meteorite, a debris field and the planet Venus all shed new light on our own planet's deep history.
This episode is also available as a blog post: http://daretoknow.ca/2022/06/17/planetary-formation-in-the-news/
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Consumer choices are supposed to be based on rational self-interest. Find out how a new study explains why we often make sub-optimal decisions that barely meet our needs.
This episode is also available as a blog post: http://daretoknow.ca/2022/06/10/consumer-choices-dont-always-make-sense/
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Safeguarding biodiversity is crucial for the survival of Humanity and the entire ecosphere. Find out why new research calls for governments to increase global land conservation from 17% to 44% if we’re serious about preserving Earth’s ecosystems.
This episode is also available as a blog post: http://daretoknow.ca/2022/06/04/safeguarding-biodiversity-means-conserving-44-of-earths-land/
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Galaxies without dark matter are rare and were once thought impossible. Find out how a new hypothesis about their formation may explain how all galaxies form and what dark matter is.
This episode is also available as a blog post: http://daretoknow.ca/2022/05/25/galaxies-without-dark-matter-might-form-from-collisions/
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Healthy sleep always makes us feel better the next day. Find out how a recent discovery may lead to more effective treatments for mood disorders, PTSD and other mental illnesses.
This episode is also available as a blog post: http://daretoknow.ca/2022/05/15/healthy-sleep-helps-us-process-our-emotions/
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A proposed Anthropocene epoch will be reviewed this month and possibly approved by the end of this year. Find out which sites are contending to be the epoch’s “golden spike” and the prospects of its final approval.
This episode is also available as a blog post: http://daretoknow.ca/2022/05/09/proposed-anthropocene-epoch-seeks-formal-approval/
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Black widow binary stars consist of a neutron star consuming a nearby companion star. Find out how scientists used a new technique to find one of these rare systems, and why their discovery has two other unique characteristics.
This episode is also available as a blog post: http://daretoknow.ca/2022/05/05/black-widow-binary-star-found-shortest-orbit-ever/
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The diet-size relationship is a universal principle in the animal kingdom that dates back millions of years. Find out how human activity is disturbing that principle's balance and the implications for species extinction.
This episode is also available as a blog post: http://daretoknow.ca/2022/04/25/diet-size-relationship-in-animals-disturbed-by-humans/
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The UN Human Rights Council adopted a plan of action to combat disinformation last week. Find out why disinformation is more than just a nuisance, it's a threat to human rights and fundamental freedoms.
This episode is also available as a blog post: http://daretoknow.ca/2022/04/03/un-human-rights-council-condemns-fake-news-and-hate-speech/
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The Hubble Telescope has just located a star that's 12.9 billion light-years away. Find out why this discovery offers new insights into how our Universe began.
This episode is also available as a blog post: http://daretoknow.ca/2022/04/10/hubble-telescope-finds-most-distant-star-ever-seen/
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Belief in evolution makes us more tolerant of those who seem different from ourselves. Find out how a new study confirms this and encourages teaching evolution in the classroom.
This episode is also available as a blog post: http://daretoknow.ca/2022/04/18/belief-in-evolution-promotes-tolerance/
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Male dolphins are healthier and live longer when they have a network of male friends. Find out how a new study revealed that this popularity also makes them more likely to find mates.
This episode is also available as a blog post: http://daretoknow.ca/2022/03/27/male-dolphins-find-mates-using-wingmen/
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The James Webb Space Telescope team has announced that they've completed a key stage in deploying its primary mirror. Find out why NASA now confirms that the telescope's audacious design will deliver on its demanding science goals.
This episode is also available as a blog post: http://daretoknow.ca/2022/03/20/webb-telescope-optics-meet-expectations/
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This episode is also available as a blog post: http://daretoknow.ca/2022/02/27/planet-with-two-suns-detected-by-ground-based-telescope/
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This episode is also available as a blog post: http://daretoknow.ca/2022/02/20/co-worker-support-drives-employee-creativity/
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This episode is also available as a blog post: http://daretoknow.ca/2022/02/13/invasive-plants-cause-more-problems-with-climate-change/
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This episode is also available as a blog post: http://daretoknow.ca/2022/02/04/moons-may-guide-us-to-life-on-other-planets/
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This episode is also available as a blog post: http://daretoknow.ca/2022/01/31/sleep-problems-threaten-nurses-mental-health/
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This episode is also available as a blog post: http://daretoknow.ca/2021/09/30/truth-and-reconciliation-day-there-is-no-try/
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This episode is also available as a blog post: http://daretoknow.ca/2022/01/22/warmest-eight-years-ever/
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This episode is also available as a blog post: http://daretoknow.ca/2022/01/09/james-webb-space-telescope-unfolds-its-mirror/
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This episode is also available as a blog post: http://daretoknow.ca/2021/09/26/language-skills-how-do-we-get-them/
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This episode is also available as a blog post: http://daretoknow.ca/2021/09/18/coral-reefs-need-reforestation-to-stop-sediment-run-off/
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This episode is also available as a blog post: http://daretoknow.ca/2019/05/27/exotic-fourth-state-of-matter-on-the-sun/
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This episode is also available as a blog post: http://daretoknow.ca/2022/03/06/ipcc-climate-change-report-upstaged-by-ukraine/
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The Langmansoren Woman lived 4,000 years ago in Northeastern Sweden. Find out how an archeological artist has reconstructed her face and forged a human connection with her remains.
This episode is also available as a blog post: http://daretoknow.ca/2022/03/13/langmansoren-woman-broght-to-life-after-4000-years/
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PLANET FORMATION CLARIFIED BY YOUNG STAR SYSTEM Planet formation remains one of the mysteries of astrophysics. Find out how a new study sheds light on the process and offers a new method for future research in the field. This episode is also available as a blog post: http://daretoknow.ca/2021/08/21/planet-formation-clarified-by-young-star-system/
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COSMIC QUERIES – A REVIEW Cosmic Queries is a new book written by Neil DeGrasse Tyson and James Trefil and published by National Geographic. Find out how this book balances education and entertainment in a highly readable volume. This episode is also available as a blog post: http://daretoknow.ca/2021/08/18/cosmic-queries-a-review/
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GRIZZLY BEAR DNA MATCHES INDIGENOUS HUMAN LANGUAGES Grizzly bears and humans have very similar needs in terms of diet and habitat. Find out about a fascinating study’s connection between bear DNA and human language groups in British Columbia. This episode is also available as a blog post: http://daretoknow.ca/2021/08/17/grizzly-bear-dna-matches-indigenous-human-languages/
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Hubble tension is the difference in results that scientists get when they try to measure the rate at which our Universe expands. Find out how a new study may have split the difference and loosened the tension between two camps of researchers.
This episode is also available as a blog post: http://daretoknow.ca/2021/07/19/hubble-tension-may-be-loosening/
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The Sixth Extinction’ by Elizabeth Kolbert is a Pulitzer Prize winning overview of past and present mass extinctions. Discover why many scientists believe that humans are causing a new era of mass extinction today.
This episode is also available as a blog post: http://daretoknow.ca/2021/04/21/the-sixth-extinction-an-unnatural-history-a-review/
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Bird evolution has helped scientists understand how natural selection works since the time of Darwin. Find out how a species of birds in Indonesia demonstrated how rapidly evolution can take place.
This episode is also available as a blog post: http://daretoknow.ca/2021/07/22/bird-evolution-can-be-surprisingly-fast/
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The Mars HelicopterIngenuity made the first powered, controlled flight on another planet today. Discover the challenges the flight overcame and the next steps for the mission.
This episode is also available as a blog post: http://daretoknow.ca/2021/04/19/mars-helicopter-ingenuity-takes-flight/
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Brain cells have both excitatory and inhibitory roles in transmitting neural signals. Discover how they can adapt within those roles and what that could mean for treating brain disorders.
This episode is also available as a blog post: http://daretoknow.ca/2021/04/06/brain-cells-have-mysterious-self-organizing-ability/
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Lightning strikes have played a part in theories on the origin of life since Darwin. Discover how a new study sheds more light on the role of lightning in bringing life to our planet.
This episode is also available as a blog post: http://daretoknow.ca/2021/04/03/lightning-strikes-vital-to-origin-of-life/
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Dark energy is a hypothetical force that scientists rely on to explain why the Universe expands at an accelerating rate. Discover how a new theory challenges dark matter’s existence based on magnetism.
This episode is also available as a blog post: http://daretoknow.ca/2021/04/01/dark-energy-dark-matter-magnetism/
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'Origins: Cosmos, Earth and Mankind’ is a classic work in the Big History movement. Discover how it outlines the evolution of the Universe and its meaning for our lives together.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/27/origins-cosmos-earth-and-mankind-a-review/
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The “copper culture” lived near the Great Lakes and was among the world’s first peoples to forge metals. Discover why their culture moved on and how its discovery debunks racial stereotypes.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/25/copper-culture-in-north-america-is-older-than-we-thought/
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Lifeless matter could only have evolved into self-replicating molecules by growing more complex. Discover how destruction might make this counterintuitive process conceivable.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/22/lifeless-matter-needs-destruction-to-evolve/
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The Big Bang Afterglow is known as the Cosmic Microwave Background (CMB). Discover how combining CMB data with galactic observations is unlocking the secret of galaxy formation.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/19/big-bang-afterglow-showing-how-galaxies-form/
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Subjective memories are those vivid, emotional impressions we relive when recalling a past experience. Find out how they affect our decision-making and why they may not be in our best interest.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/15/subjective-memories-drive-our-decision-making/
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Air pollution has a cooling effect on the atmosphere, while greenhouse gases cause global warming. Find out why both emission types must be cut in combination to preserve our environment.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/13/air-pollution-and-greenhouse-gas-reductions-go-together/
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The Universe’s expansion rate, the Hubble constant, is vital to understanding the Cosmos’ origin and fate. Find out how the latest technique for measuring the Hubble constant sheds new light on the past and future.This episode is also available as a blog post: http://daretoknow.ca/2021/03/10/universes-expansion-rate-still-hard-to-pin-down/
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The Canon is a playful book aimed at teaching adults basic science. Find out why the author felt readers needed this book and how it makes science fun again.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/09/the-canon-a-whirligig-tour-of-the-beautiful-basics-of-science-a-review/
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Carbon taxes aren’t terribly popular in some circles, but they work. Find out what a new study found about the results of putting a price on carbon compared to other measures to combat the climate crisis.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/06/carbon-taxes-are-the-best-way-to-fight-climate-change/
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The bow and arrow is an ancient technology, and it takes great skill to make a bow. Find out what researchers discovered from interviews with expert bow makers from the hunter-gatherer Hadza people.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/06/bow-and-arrow-technology-and-culture/
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Gravitomagnetism is the energy created by spinning objects in the fabric of spacetime. Find out why it may explain away the mysterious Dark Matter for which scientists have been searching unsuccessfully.
This episode is also available as a blog post: http://daretoknow.ca/2021/03/05/gravitomagnetism-does-it-explain-away-dark-matter/
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'The Sacred and the Profane' is a classic book on the history of religion. Find out how it reveals the Universe, Nature and Humanity as our connections to the sacred.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/28/the-sacred-and-the-profane-a-review/
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Indigenous rights were the subject of new legislation in Canada’s parliament. Find out why practical steps to provide safe drinking water mean more to Canada’s First Nations communities.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/25/indigenous-rights-debated-while-first-nations-lack-safe-water/
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‘Making Peace with Nature’ is the title of a new report from the United Nations Environment Program (UNEP). Find out how it lays out a blueprint for solving our climate, biodiversity and pollution challenges.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/24/making-peace-with-nature-report-offers-sustainable-blueprint/
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Mars was made the news three times this week as three countries arrived there within days of each other. Find out the objectives of each mission and their plans to learn about the Red Planet.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/20/mars-makes-news-three-times-this-week/
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The View From the Centre of the Universe is part of a sub-genre of interpretations of Thomas Berry’s essay, The New Story. Find out why the authors believe our current thinking needs a drastic change.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/20/the-view-from-the-centre-of-the-universe-the-new-story-retold/
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Alcoholism is a widespread yet poorly understood disease. Find out how a new study locates its roots in the brain and may lead to better treatment.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/16/alcoholisms-brain-pathway-located-by-mri-scans/
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Food waste is getting out of hand as consumers reject items with minor imperfections. Find out what’s behind our food choices and how we can improve our decision making.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/15/food-waste-results-from-picky-consumers/
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The Square Kilometre Array Observatory has received international approval. Find out why this megaproject signals an inspiring new era in global astronomy.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/08/square-kilometre-array-will-be-worlds-largest-radio-telescope/
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Human tolerance sets us apart from other animals. Find out how a computer simulation shows that harsh conditions drove our ancestors’ self-domestication process.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/06/human-tolerance-evolved-from-living-in-harsh-conditions/
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Animal movement changes are the result of human disruption of ecosystems. Find out why these changes pose a threat to species survival and to global biodiversity.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/04/animal-movement-disruptions-threaten-biodiversity/
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The Last Journey Simulation used Mira, one of the world’s most powerful supercomputers, to model how mass flows through our Universe. Find out how it breaks ground for future cosmological studies.
This episode is also available as a blog post: http://daretoknow.ca/2021/02/01/last-journey-simulation-follows-matter-through-universe/
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A tidal dwarf galaxy has been the target of an international research team. Find out how their discoveries challenge what we thought we knew about how stars form.
This episode is also available as a blog post: http://daretoknow.ca/2021/01/26/tidal-dwarf-galaxy-reveals-clues-about-star-formation/
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Trees and plants absorb carbon dioxide, mitigating climate change. Find out why a new study concludes that this C02 fertilization effect is getting weaker.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/19/trees-and-plants-losing-capacity-to-stop-climate-change/
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Radio signals from an exoplanet have been detected by a team of radio astronomers. Find out how this discovery contributes to the search for life beyond Earth.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/18/radio-signals-detected-from-planet-beyond-solar-system/
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International Human Rights Day is the perfect time to review a classic book. Find out why The Origins of Totalitarianism is rated one of the top non-fiction books of the 20th century.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/13/international-human-rights-day-a-review-of-the-origins-of-totalitarianism/
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Patience seems to be universally valued as a virtue. Find out how a new study sheds light on how our brains regulate our capacity to delay instant gratification.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/08/patience-where-it-comes-from-and-why/
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World Soil Day celebrates the value of healthy soil. Find out what a new soil biodiversity report found on soil’s place in a sustainable future.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/05/world-soil-day-celebrates-healthy-food-secure-future/
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Fast radio bursts have puzzled astronomers since their discovery in 2007. Find out how scientists have revealed their origin and their variability.
This episode is also available as a blog post: http://daretoknow.ca/2020/12/01/fast-radio-burst-puzzle-solved-by-using-four-telescopes/
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Net-Zero Emissions is the stated goal of a bill tabled this week in Ottawa. Find out why opposition parties are calling it an empty shell.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/29/net-zero-emissions-bill-breaks-trudeaus-climate-pledge/
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Dogmatic people pose a problem. They resist ideas, and divide groups. Find out why eliminating dogmatism is more challenging than you might think.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/26/dogmatic-people-are-less-likely-to-check-their-facts/
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The Arecibo Observatory was already damaged when a main cable snapped. Find out why this closed the facility for good and what the plan is now.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/24/arecibo-observatory-decommissioned-after-second-cable-breaks/
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Refugee resettlement worldwide hit a twenty year low due to the pandemic. Find out why the UN says this has to change by the end of the year.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/20/refugee-resettlement-hits-twenty-year-low/
Send in a voice message: https://anchor.fm/david-morton-rintoul/message
Wolves and beavers interact throughout North America. Find out how their relationship has a profound impact on wetland habitats.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/18/wolves-and-beavers-are-vital-to-ecosystems/
Send in a voice message: https://anchor.fm/david-morton-rintoul/message
Water on Mars has been escaping for at least a billion years. Find out how NASA’s MAVEN spacecraft has shed new light on why this happens.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/17/water-on-mars-where-does-it-all-go/
Send in a voice message: https://anchor.fm/david-morton-rintoul/message
Beautiful food images are imposed on us everywhere. Find out what researchers at USC recommend to avoid making poor food choices as a result.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/15/beautiful-food-seems-healthier-even-when-its-not/
Send in a voice message: https://anchor.fm/david-morton-rintoul/message
Remembrance Day was oddly sunny and warm this year. I reflect on the history of Armistice Day and what it means for us a century later.
This episode is also available as a blog post: http://daretoknow.ca/2020/11/11/remembrance-day-a-day-of-pride-or-sorrow/
Send in a voice message: https://anchor.fm/david-morton-rintoul/message