Are cows giving us bird flu? And everything we (don't) know about nanoplastics

How bird flu has (probably) gone from cows to humans, as well as the latest on psychedelics for depression and psychotropics in healthcare.

How much time you should spend sitting, standing, moving and sleeping for the optimal 24 hours. 

How sexuality might shorten your lifespan. And why the health effects of nanoplastics are so difficult to uncover.