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Throughout Earth’s history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps. Without this ice, the sea level was 70 meters higher. At the other extreme, about 700 million years ago, Earth became almost entirely covered in ice, during an event known as “Snowball Earth.” What causes these swings in the planet’s climate? Lorraine Lisiecki investigates.
Lesson by Lorraine Lisiecki, animation by CUB Animation.
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Cite This Work
TED-Ed, . (2018, May 16). When will the next ice age happen? - Lorraine Lisiecki. World History Encyclopedia. Retrieved from https://www.worldhistory.org/video/1383/when-will-the-next-ice-age-happen---lorraine-lisie/
TED-Ed, . "When will the next ice age happen? - Lorraine Lisiecki." World History Encyclopedia. Last modified May 16, 2018. https://www.worldhistory.org/video/1383/when-will-the-next-ice-age-happen---lorraine-lisie/.
TED-Ed, . "When will the next ice age happen? - Lorraine Lisiecki." World History Encyclopedia. World History Encyclopedia, 16 May 2018. Web. 22 Jun 2021.