Why Do We Make Weird Faces When We Taste Something Sour?
If you can't resist puckering your mouth when you lick a lemon or snack on Sour Patch Kids, you can thank evolution.
If you can't resist puckering your mouth when you lick a lemon or snack on Sour Patch Kids, you can thank evolution.
Fans of '90s alternative music may recall King Missile's big single, "Detachable Penis." While the song may have been silly, it turns out than in the animal world, the idea isn't all that bizarre—at least not to the sea slug Chromodoris reticulata.
Chimpanzees share about 98 percent of their genes with humans, but you wouldn't want to invite this side of the family over for dinner.
What do chipmunks eat? Baby birds, occasionally. Do chipmunks hibernate? Yes, but not like bears do.
How many ice ages have there been so far? The same number of ‘Ice Age’ movies that have been released. (Five.)
Scientists have uncovered ancient fossils, prehistoric artwork, and other clues to human evolution. Here are nine of the most revealing discoveries that have changed our understanding of our early ancestors—and ourselves.
The phrases ‘survival of the fittest’ and ‘natural selection’ really only scratch the surface of Charles Darwin’s theory of evolution.