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Explorer Johan Ernst Nilson set out on a journey from the North Pole to the South Pole
Scientists are working to protect the clown fish
Scientists uncover a new species of monkey in Central Africa
A discovery reveals Jupiter may be acting as a magnet for asteroids that are heading towards Earth
The world says goodbye to Neil Armstrong, the first man to walk on the moon
A powerful robot called Curiosity lands safely on Mars and begins to explore the planet
Watch how Olympian Missy Franklin swims for gold in a video from NBC Learn
The search for Amelia Earhart’s plane continues
A tribute to Sally Ride, the first U.S. woman to travel to space
Fossils found in Oregon suggest that more than one culture developed in the Americas 13,000 years ago
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