If you grew up with a brother or sister, you probably know what sibling rivalry is like. For a spotted hyena, sibling rivalry is a matter of life and death.
If a minnow's skin is damaged by an attacking pike, it releases a chemical that attracts more pike. Why would a minnow want to attract more trouble?
The Neanderthals were smart, tough, and well-adapted to the cold where they lived in regions north of Africa, so what happened to them?
One theory as to why humans began walking upright notes that when our species was just getting its start, the ability to reach up for fruit was beneficial.
Ever wonder what penguins do all day? Learn more on this Moment of Science.
How good are you at reading faces? Scientists have found that your gender may affect this ability.
Why are there males and females? Why are there two sexes instead of three, or twelve, or one?
Close your eyes and imagine that you’re a Mormon cricket. Why, you ask? Well, Mormon crickets are interesting. Like desert locust, they sometimes form large bands that march across the landscape of northeastern Utah and northwestern Colorado, and basically eat everything in their way. Learn more on this Moment of Science.
Have you ever wondered why cannibalism isn’t more popular? Just think about it, each animal is made of a complex variety of chemical ingredients. As an animal, we can either try to assemble these ingredients haphazardly, eating other animals and plants and hoping these assorted meals will add up to exactly what we need. Or we can get all our essential nutrients in one complete package by dining on our next-door neighbor! Learn more on this Moment of Science.
Very few people actually sit down and make up jokes, yet everyone is always telling jokes. Where do they come from? Learn more on this Moment of Science.