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Japan: Mystery of large iron ball washed up on beach – “Not a sea mine”, authorities say (video)

Object washed up on Enshu beach in Hamamatsu City on the Pacific Coast

Guy spends almost a year gluing 42.000 matches to make a giant sphere & sets it on fire! (VIDEO-PHOTOS)

Wallace is from Upstate New York, and he spent almost an entire year on a...totally-not-cool project!

How Ancient Greek mathematician Eratosthenes calculated the Earth’s circumference (VIDEO)

The idea that Earth is a sphere was first introduced by another ancient Greek mathematician, Pythagoras, around 500 BC and validated by Aristotle about 200 years later

Donald Trump photo with sphere causes meme firestorm (photos)

Resembles Marvel's Hydra