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Eons: Season 2022

2022x21 Why Does Caffeine Exist?
TV-G

  • 2022-07-28T17:00:00Z on PBS Digital Studios
  • 10m
  • United States
  • English
  • Documentary
Today, billions of people around the world start their day with caffeine. But how and why did the ability to produce this molecule independently evolve in multiple, distantly-related lineages of flowering plants, again and again?
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