|  1. Why does the Earth move round its axle during 24 
      hours?
 2. Why is the Earth moving on its orbit at a very high speed at the beginning 
      of January and a very low speed at the beginning of July?
 3. Which is the cause of the climate abnormalities (solar radiations, prolonged 
      droughts or very rainy and cold years)?
 4. What is the philosopher’s stone or the elixir of life?
 5. What did the wise man in antiquity discover that he was crying on the 
      streets of Athens: Eureka! Eureka!
 6. What do represent the drawings of the wise antique man who said: Do not 
      destroy my circles (drawings), before being killed?
 7. The reason for the decay and disappearance of big civilisations and empires 
      (the Tsarist Empire).
 8. The reason for the disappearance of the prehistoric animals, of volcanoes, 
      and earthquakes.
 9. The very mysterious secrets of the human brain.
 When 
        people do not understand a phenomenon, they try to go away from it, or 
        to give it an explanation according to one’s own imagination.
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