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Digging to China

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The idea of digging a hole to China surfaces as early as 1872 in a Chamber’s Journal fiction piece about beavers and engineers. Unfortunately, digging from almost anywhere in the United States would lead you to open water on the other end. To dig straight through to China, you’d have to start shoveling in Northern Argentina. There’d also be a few pesky physics problems to work out, like the fiery, molten mass at the center of the Earth. Here’s how to find out where you’d end up when you start digging from anywhere on the planet, and how to make an earth sandwich with your antipodes. This is part of a complete episode.

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