Why did the Homo sapiens survive and the Neanderthals didn't? Scientists now believe the Neanderthals' large eyes may be to blame. Indeed, analysis of Neanderthal skulls shows that they had much larger eye sockets than the Homo Sapiens. This,...
  A tuatara's teeth are connected to its jawbone and when lost, cannot be replaced. As a tuatara gets older, it has to eat softer food like earthworms and slugs.  
  Isinglass is a substance found in the swim bladders of fish and once dried, it is used in the processing of wine and beer, particularly to make these beverages clearer.  
  Each day, you make up to 2 liters of saliva. Saliva is important, after all. It not only helps in digestion and protects you teeth but without saliva, you wouldn't be able to taste.  
  In Sparta, men were required to live in military barracks until they were 30. Only after could they marry and most of them did since marriage was an important duty in order to add more soldiers to the army.  
  While some salamanders are born as adults, axolotls never become adults. Instead, they retain their gills for life and have legs that never fully develop, which means they have to stay in the water, earning the name 'walking fish'....
  This comes from the Greek myth wherein Eris, the goddess of mischief, threw a golden apple in the middle of the wedding banquet, saying that it was for the most beautiful goddess of all, a title which Hera, Athena...
  It is unsure who invented the thermometer but it was once filled with brandy instead of mercury and apparently, was accurate enough.  
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