Why Do We Have Eyebrows?
Eyebrows are the Swiss Army knife of the human face.
Eyebrows are the Swiss Army knife of the human face.
Gasping is tied to an innate survival mechanism, hardwired into humans through evolution: the fight-or-flight response.
Why do we even have them? Let's get to the root of the issue.
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.