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Where did Earth’s water come from? - Zachary Metz

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Water covers over 70% of the Earth, cycling from the oceans and rivers to the clouds and back again. It even makes up about 60% of our bodies. But in the rest of the solar system, liquid water is almost impossible to find. So how did our planet end up with so much of this substance? And where did it come from? Zachary Metz outlines the ancient origins of water on Earth.

What does it mean for the origins of life if water came much earlier than suspected?

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About TED-Ed Animations

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 Zachary Metz
  • Animator Nadav Arbel
  • Artist Nir Golan
  • Script Editor Alex Gendler
  • Narrator Addison Anderson

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