Your body isn’t a finely-tuned machine. It’s a reinforced pile of goo that spends its day trading off costs and benefits. One of those costs is the tartar building up on your teeth because of the surprising source of your saliva.
It's always funny—if a little gross—when you see a friend launch a spot of spittle across the room as they chat on the phone. But new research suggests that frequent cell phone users actually slobber more, making those discharges all the more common.
Your spit can pinpoint your age to within five years, making it by far the most accurate age test yet found. This discovery could help identify how old crime scene suspects are, as well as reveal people's true biological ages.
Just when I thought I could get away with saying I was 25 and holding, scientists from UCLA had to design a test that can accurately predict my age from trace amounts of saliva. Just great.
In the face of a global food crisis, it's good to know that we have newly-developed robotic mouths around. Composed of teeth-like protrusions, variable speed motors, artificial saliva and a helium flow to quarantine-released compounds, this artificial mouth can masticate with the best of 'em.