Ancient Greeks proved Earth is round 2,000 years ago

In the mid-20th century, we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. But over 2000 years earlier, a man in Ancient Greece came up with nearly the exact same figure using just a stick and his brain. Following is a transcript of the video. Continue reading “Ancient Greeks proved Earth is round 2,000 years ago”

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