Check out the 5 most interesting facts about science for kids: The human nose can detect over 1 trillion different scents. The human brain has the ability to store more information than all the libraries in the world combined. The earth's core is as hot as the surface of the sun. Sharks have been around for at least 400 million years. If you travel at the speed of light, it only takes 0.1337 seconds to go around the earth.