1
By TED-Ed
Published in 2015
Tens of millions of years ago, plate tectonics set North and South America on an unavoidable collision course that would change the face of the Earth and spell life or death for thousands of species. Juan D. Carrillo explains the massive biological repercussions of this collision, which caused one...
Grade Level   5 6 7 8 9 10 11 12
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2
By TED-Ed
Published in 2013
While the Earth's oceans are known as five separte entities, there is really only one ocean. So, how big is it? As of 2013, it takes up 71% of the Earth, houses 99% of the biosphere, and contains some of Earth's grandest geological features. Scott Gass reminds us of the influence humans have on the...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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3
By TED-Ed
Published in 2013
Snow Dragon. Pure Imagination. Frozen Minotaur. These are the names Eddy Cartaya and his climbing partner Brent McGregor gave three glacier caves that they were the first to explore, caves that are morphing constantly thanks to warm water and warm air. At TEDYouth, Cartaya takes us inside these...
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4
By TED-Ed
Published in 2016
North America didn't always have its familiar shape, nor its famed mountains, canyons, and plains: all of that was once contained in an unrecognizable mass, buried deep in Rodinia, a huge supercontinent that lay on the surface of the Earth. Peter J. Haproff explains how it took millions of years and...
Grade Level   6 7 8 9 10 11 12
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5
By TED-Ed
Published in 2014
Too often we think of air as empty space — but compared to a vacuum, air is actually pretty heavy. So, just how heavy is it? And if it's so heavy, why doesn't it crush us? Dan Quinn describes the fundamentals of air pressure and explains how it affects our bodies, the weather and the universe at...
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6
By TED-Ed
Published in 2015
Did you know that gold is extraterrestrial? Instead of arising from our planet’s rocky crust, it was actually cooked up in space and is present on Earth because of cataclysmic stellar explosions called supernovae. CERN Scientist David Lunney outlines the incredible journey of gold from space to...
Grade Level   6 7 8 9 10 11 12
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7
By TED-Ed
Published in 2015
One could say that snowflakes are simply frozen water -- but if you compare a snowflake to an ice cube, you'll notice the big difference. Why are all snowflakes six-sided? Why are none of them exactly the same? Marusa Bradac sheds light on the secret life of snowflakes.
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8
By TED-Ed
Published in 2016
At 8,850 meters above sea level, Qomolangma, also known as Mount Everest, has the highest altitude on the planet. But how did this towering formation get so tall? Michele Koppe peers deep into our planet's crust, where continental plates collede, to find the answer.
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