19. The largest known prime number contains 41,024,320 digits. 20. Frogs breathe and drink through their skin. 21. A bullet ...

Even if you think you learned everything that you needed to know way back in biology class, everyone has knowledge gaps. And ...

Some people say that today there are almost no "blank spots" left on our planet - that is, places completely unexplored by humans. And therefore, supposedly, life today has become more boring than, ...