Workers at the drilling site for a geothermal energy plant in Neustadt-Glewe, Germany. Jens Büttner/picture alliance via Getty Images When I was a kid, I liked to dig holes in my backyard in ...
When I was a kid, I liked to dig holes in my backyard in Cincinnati. My grandfather joked that if I kept digging, I would end up in China. In fact, if I had been able to dig straight through the ...
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