Alzheimer’s breakthrough ‘beginning of the end’ for the disease. YouTube daredevil Danny MacAskill on old-school videos and algorithms. Creepy Zuckerberg deep fake goes viral. Mariah Carey vs Bats: which has a better vocal range?

Also in this episode:

• Tesla is 'redesigning the Model 3’.
• Researchers discover two new minerals on meteorite grounded in Somalia
• China sends new crew to Tiangong space station
• ‘Enough Christmas turkeys available’ despite Avian flu outbreak

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