How Does Saliva Work?

Some idioms have a fairly clear origin, but others have been lost to time and legend. Learn about the game that inspired calling dibs, the media that created calling shotgun, and why the 'real' McCoy was probably a number of people -- all in today's episode of BrainStuff, based o ...  Show more

The Batagaika crater (or, technically, megaslump) is a massive pit caused by thawing permafrost -- and it's only getting bigger. Learn what paleontologists have found there (and why geoscientists are worried about it) in today's episode of BrainStuff, based on these articles: htt ...  Show more

The slimy substance is so powerful that doctors once made hog stomach mucus milkshakes to treat ulcers. Learn more about your ad choices. Visit megaphone.fm/adchoices 

The slimy substance is so powerful that doctors once made hog stomach mucus milkshakes to treat ulcers. Learn more about your ad choices. Visit megaphone.fm/adchoices 

A look at the evidence that links the health of our mouths with the rest of our bodies. 

Find out about the bacterial life of a passionate kiss as Robert and Julie explore the human smooch. Is kissing instinctual and learned, and what does it have to with food, if anything?