The animal with the largest brain in proportion to its size is the ant. They are the smartest species of insects with about 250,000 brain cells. See more

22% of American women aged 20 gave birth while in their teens. In Switzerland and Japan, only 2% did so. See more

Those stars and colours you see when you rub your eyes are called phosphenes. See more

A shark is the only fish that can blink with both eyes. See more

Fish that live more than 800 meters below the ocean surface don't have eyes. See more

At birth, a panda is smaller than a mouse and weighs about four ounces. See more

Zero point energy is a source of energy which is released when atoms stop moving, at -273 Celcius. See more

The blue whale has a heart the size of a small car and its blood vessal is so broad, that a person could swim through it. See more