Why are owls such efficient predators? Large eyes and flexible necks.
The main difference between hair and fur is where it grows, not what it's made of.
Trampling obviously harms grass, but do you know exactly how it does?
Anyone who owns a cat is familiar with the head-bumping way they greet you, but what does this behavior mean?
Your sense of right and wrong may be highly influenced by your cultural identity.
You've been on a treadmill for a while and then suddenly step off. Why do you feel like you're moving much faster than you think you should be?
As children younger than four, we could talk, think, and perceive. So why are those years so hard to remember?
Ever wondered why we humans don't have spots or stripes? Well, maybe you haven't, but it is interesting that so many creatures are multicolored but we are not.
One common misconception people have regarding evolution is that the gradual changing of physical forms always benefits the species in question.
If you've ever been up all night, you may have found that staying awake becomes a lot easier after five or six a.m. Why?