The 10 Most Popular Videos of All Time

A collection of some of our fan favorites.

NASA’s plan to stop an asteroid headed for Earth
In 2013, a small meteor exploded above Chelyabinsk, Russia that sent over 1,200 people to the hospital. Now, NASA has plans to detect Earth-bound asteroids and defend the planet from another large-scale catastrophe.
Videos (10)
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In 2013, a small meteor exploded above Chelyabinsk, Russia that sent over 1,200 people to the hospital. Now, NASA has plans to detect Earth-bound asteroids and defend the planet from another large-scale catastrophe.
asteroid headed for earth
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This search and rescue expert discovered that many missing people had nobody looking for them. Then he had an idea: what if hackers made a game out of finding missing people through the internet?
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After losing part of his arm to cancer, Johnny now has one of the world's most advanced prosthetics.
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Could robotic dolphins help marine parks become more humane spaces where people can learn about and connect with nature?
Robotic dolphin
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If adopted globally, concentrated solar power could make major waves in manufacturing, not to mention prevent wars over oil and mitigate climate change.
concentrated solar power
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The Tattooed, Skater Principal Making Education Fun Again