Forget feathers -- this dinosaur had a rooster's comb on its head

When scientists discovered that some dinosaurs had feathers, it completely changed our perception of what the ancient animals looked like — and pissed a lot of people off. Now, in another twist, researchers have found that the duck-billed dinosaur Edmontosaurus regalis had a fleshy crest similar to a rooster's comb. » 12/13/13 2:13pm 12/13/13 2:13pm

Did men create menopause by chasing after younger women?

From an evolutionary perspective, human menopause doesn’t make a lot of sense. Searching for an explantion for this somewhat uniquely human process, a group of Canadian researchers used computer models to show that menopause is an unintended outcome of natural selection — and men's sexual preferences might be to blame. » 6/13/13 2:20pm 6/13/13 2:20pm

How does the rhino beetle's gigantic horn not totally mess with its…

Seriously, look at the size of the thing sticking out of that beetle's head, and that's not even the maximum size those things grow to. All male rhino beetles have these giant horns growing out of their heads as a way of showing off their sexual prowess to any female rhino beetles that might be around. Crazy, unwieldy… » 3/17/13 4:00pm 3/17/13 4:00pm

Europeans Pick Mates By Smell More Often than Africans Do

Scientists have known for a while that humans seem to pick mates partly based on the way they smell. That's because a person's smell is related to their Major Histocompatibility Complex (MHC), a cluster of genes that shape a person's immune system. For years, scientists have debated whether people pick mates based on… » 9/12/08 3:20pm 9/12/08 3:20pm

Why Nature Prefers a Small Man to Mate with a Big Woman

If you watch enough TV, you get the idea that the ideal mating combination is a skinny little woman and a burly man. But a new evolutionary study published in American Naturalist » 9/05/08 1:47pm 9/05/08 1:47pm shows that's not what nature intended. In fact, the humble New Zealand weta (a relative of the cricket) demonstrates that evolution often…