“All of Nature – mountains, rivers, trees, crystals, metals, all living beings, even human beings – is nothing other than numbers incarnated. If you study this question in depth, you will find that nothing exists apart from numbers. Everything is number; Nature and the whole Universe are built upon numbers, which form an indestructible, geometric framework similar to the skeleton.
Sailing stones - Good topic to illustrate the process of the scientific method. Learn about this "mystery," the many theories proposed and tested to explain it(Netflix features a series called "Weird or What?" with a segment about the moving rocks in the first episode that would be good to watch), then read about/watch this 2014 discovery as to the real reason these rocks move.
DNA's discoverer Francis Crick's handwritten note tells his 12-year-old son that he and his colleague Jim Watson had "probably" made a "most important discovery." Dr Crick wrote: "We have built a model for the structure of des-oxy-ribose-nucleic-acid, (read it carefully) called DNA for short. In other words we think we have found the basic copying mechanism by which life comes from life." The note, which is dated March 19 1953, is expected to sell for 1.3 million pounds in New York.