About the book: year / What is light? Why can't we move faster than the speed of light? What is fire and why does it burn? How does the simplest formula H2O describe all the diversity of water on the planet? All or almost all questions were answered, assumptions were made, experiments were carried out, formulas were derived and tables were compiled. And the Earth, a living and thinking planet, continues to surprise, invent, fantasize and do everything so that the creatures living on its surface do not get bored. How simple it all turned out: take a little solar energy, mix with the cells of an ever-living jellyfish, add a little turtle wisdom, take the crocodile survival gene and so, for laughter and cuteness, flavor everything with the smile of the Cheshire Cat, mix with pure ancient water, do not shake! People called it the Elixir of Life. The planet has prepared a lot of it. There would be enough for everyone. But such is human nature. He is selfish and cruel. She is working, changing this nature, but there is still a lot of work to be done and she is interested. Who will get to the Elixir first??