Our eyes sometimes play tricks on us because our brains have evolved to see patterns, even where there are none.
It's a gas! Air consists of nitrogen and oxygen and lots of empty space.
Here's how to undo the damage caused by tooth decay:
Problematic pregnancies that required assistance revolutionized child delivery for early humans.
Earthworms are taking a bite out of forest ecosystems.
Beluga whales are helping scientists plumb the icy depths of the Arctic.
Now extinct, plesiosaurs were predatory creatures that haunted the deep seas.
People rely heavily on eye contact to suss out potential dangers.
We dream of powdery white snow, but snow actually comes in multi-colored varieties.
You can't remember what the Apple logo looks like, even if you look at it multiple times a day, everyday. Here's why: