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 2014
It takes a lot of fuel to heat our homes, preserve our food, and power our gadgets. And for 40 percent of the world, cheap, plentiful coal gets the job done. But coal also releases pollutants into the air, causing environmental damage like acid rain and serious health problems. Can we create a...
Grade Level   6 7 8 9 10 11 12
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3
By TED-Ed
Published in 2013
Why do some regions experience full-time heat while others are reckoning with frigid temperatures and snow? And why are the seasons reversed in the two hemispheres? Rebecca Kaplan explains how the shape of the Earth's orbit around the Sun and the Earth's tilt on its axis affect the amount of...
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4
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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5
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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6
By TED-Ed
Published in 2014
"In 1816, Europe and North America were plagued by heavy rains, odd-colored snow, famines, strange fogs and very cold weather well into June. Though many people believed it to be the apocalypse, this """"year without a summer"""" was actually the result of a supervolcano eruption that happened one...
Grade Level   3 4 5 6 7 8 9 10 11 12
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7
By TED-Ed
Published in 2015
Earthquakes have always been a terrifying phenomenon, and they’ve become more deadly as our cities have grown — with collapsing buildings posing one of the largest risks. But why do buildings collapse in an earthquake? And how can it be prevented? Vicki V. May explains the physics of why it is...
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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.
Grade Level   3 4 5 6 7 8 9 10 11 12
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9
By TED-Ed
Published in 2017
"Deep underground lie stores of once-inaccessible natural gas. There's technology, called hydraulic fracturing, or """"fracking,"""" that can extract this natural gas, potentially powering us for decades to come. So how does fracking work and why is it a source of such heated controversy? Mia...
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