How I Proved the Earth is Round (with my Bike and Two Sticks)
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The scientific method is an incredible thing. I use it to test if the Earth is flat or round, and to measure its size, with just my bike and two sticks. You can even go watch yourself water him in real time: kurtisbaute.com Free to watch on Dr.Doc Kids.
Courtesy of Mark Rober on YouTube. Watch on YouTube ↗
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