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Could comets be the source of life on Earth? - Justin Dowd

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While comets were historically thought to be ill omens of war and famine, recent science has revealed that these celestial wonders actually contain amino acids, the building blocks of life on Earth. Justin Dowd explores the implications of this magnificent discovery.

For thousands of years humans thought comets were omens of death. In the past 100 years more discoveries have been made than in all of history combined. Out of everything there is to be learned, what percentage of knowledge do you think is left to be discovered and why?

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TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Justin Dowd
  • Animator Justin Dowd
  • Script Editor Alex Gendler
  • Narrator Pen-Pen Chen

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