Zain Velji guest hosts the show and discusses Quebec's plan to offer COVID-19 booster shots to travellers whose vaccinations status is not accepted in other countries. 

On today's show:  Infectious diseases doctor Zain Chagla weighs-in on Quebec's booster shot plan.

Robert Hornung, president and CEO of the Canadian Renewable Energy Association, discusses the dramatic drop in renewable energy costs.   Drew Harwell, Washington Post technology reporter covering artificial intelligence and algorithms, discusses his work on The Pegasus Project.