It’s not for nothing that scientists often seem almost crazy to us - they know things that make our hair stand on end! Did you know that there are 100 million times more insects than people on Earth, and that researchers discover 10,000 new species of insects every year? Or that the solar system rotates around the center of our galaxy at a speed of 273 kilometers per second? Or that in one day a person’s blood travels more than 19 kilometers through vessels? Did you know that Neanderthals had a significantly larger brain volume than you and I? And about the fact that you constantly have about 100 million microbes in your mouth that feed on food debris and dead oral cells. Do you want to learn facts about nature, humans, animal life, as well as facts about our planet and space that will shock you? Discover scientific facts that will be fun to share with friends and tell to your children.