We're in a Technological Arms Race with Bears for Our Food

It's almost impossible to secure yourself against a food raid from bears. That's because these giant mammals are clever tool users, and they share their tech knowledge with other bears nearby. As a result, bear-proofing technology rarely works for more than a couple of decades before every bear knows how to crack it. » 1/28/15 4:58pm 1/28/15 4:58pm

Men Can Live 20 Years Longer... But There's A High Cost

Men, what would you be willing to give up to live a couple decades longer? Think carefully before you answer. Research has shown that men who are castrated may have significantly longer lifespans. Here's what we know. » 1/08/15 4:15pm 1/08/15 4:15pm

10 Fad Diets, Debunked

What should you cut out of your diet to be more healthy? Everything. According to the most popular diet books on the market, there's barely a food on Earth that's safe to eat. But what is the actual benefit of these diets? Here's what science has to say. » 11/07/14 3:09pm 11/07/14 3:09pm

We've Been Depicting Runners Wrong For Thousands Of Years

Imagine someone running. Now freeze him in place. How is he positioned? Now stand up and reproduce with your body the pose you've pictured in your mind. It doesn't have to be perfect, just capture the essence. Are you doing it? Good. Now where are your arms and legs? Are they where they should be? » 10/11/14 5:10pm 10/11/14 5:10pm

18 Things You Probably Didn't Know About Poop

The simple act of pooping is one of the most universal experiences on the planet. Let's celebrate our similarities with 18 bits of fascinating, little-known facts about feces! » 8/13/14 4:39pm 8/13/14 4:39pm

Why do we have sex at night?

Humans can have sex anytime we damn well please – so why do we mostly do it in the dark? Here's what science has to say about our preference for nighttime hookups. » 6/27/13 3:54pm 6/27/13 3:54pm

Why The NCAA Tournament Is A Metaphor For Human Evolution

The same handful of college basketball teams always seem to do well in March Madness, and the deeper reasons behind that might actually tell us something profound about human evolution. [ io9 » 3/02/11 8:03pm 3/02/11 8:03pm]