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KOLA SUPERDEEP BOREHOLE
What China aims to find by drilling a 10-kilometer deep hole into the groundChina's President Xi Jinping called for greater progress in deep Earth exploration in a speech addressing some of the nation’s leading scie...- Peeved by traffic, Elon Musk is starting a company to build underground tunnelsMusk has already started burrowing near the offices of Space Exploration Technologies Corp. in Los Angeles -- a counterintuitive direction ...
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