Ferdinand Magellan was the first man to circumnavigate the globe. He did it in 80 days, but he didn't know there should be an international date line. A nobleman scribe kept track of who died on board because disease would go through the crew. The confusion laid bare the discovery of the need for an international dateline.
Is it possible to make something invisible? Neil deGrasse Tyson and comedian Chuck Nice explore transparency, how we measure time on Earth, and how airplanes have changed.
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Photo Credit: Michael Dziedzic, CC BY-SA 4.0, via Wikimedia Commons
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