The 10 Most Popular Videos of All Time
A collection of some of our fan favorites.
![](https://www.freethink.com/wp-content/uploads/2021/04/top_10.png?quality=75&w=400&h=400&crop=1)
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)
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](https://www.freethink.com/wp-content/uploads/2021/04/asteroid-headed-for-earth.jpg?quality=75&w=200&h=200&crop=1)
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?
![](https://www.freethink.com/wp-content/uploads/2021/04/tracelabsstill1-for-web.jpg?quality=75&w=200&h=200&crop=1)
After losing part of his arm to cancer, Johnny now has one of the world's most advanced prosthetics.
![](https://www.freethink.com/wp-content/uploads/2021/04/johnnythumbnail1.jpg?quality=75&w=200&h=200&crop=1)
Could robotic dolphins help marine parks become more humane spaces where people can learn about and connect with nature?
![Robotic dolphin](https://www.freethink.com/wp-content/uploads/2021/07/JMW-Robot-Zoos_WebThumb.jpg?quality=75&w=200&h=200&crop=1)
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](https://www.freethink.com/wp-content/uploads/2021/06/concentrated-solar-power.jpg?quality=75&w=200&h=200&crop=1)
The Tattooed, Skater Principal Making Education Fun Again
![](https://www.freethink.com/wp-content/uploads/2021/04/hamish_thumb.jpg?quality=75&w=200&h=200&crop=1)