The smash hit Netflix documentary “Unknown: Cave of Bones” has kicked off an all-out science brawl. The film makes extraordinary claims about a strange ape-like creature that lived hundreds of thousands of years ago — claims that rewrite what it means to be human. But some scientists are pushing back, saying that at this point, these extraordinary claims aren’t backed up by extraordinary evidence. ...

More and more people are puffing on vapes — but some governments are making moves to ban them. So how dangerous is vaping, really? And as we inhale that sweet cherry flavor into our lungs, could we also be changing our brains? To find out, we talk to tobacco researcher Dr. Michael Chaiton, inhalation toxicologist Professor Ilona Jaspers, and pharmacology researcher Melissa Herman.

The latest hot new trend is: breathing. Yeah, that’s right — there are claims that so-called breathwork can cure depression and supercharge your brain. Breathfluencers reckon that we're breathing all wrong but that with the right kind of breathing, you could be living a happier, healthier life. So what's the deal here? Are you really breathing badly? And if you learned the right way to breathe, cou...