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Why the deepest hole on Earth was sealed, and what they discovered before it was closed!
Deep in the Arctic Circle, there’s a man-made hole that once earned the nickname “the entrance to hell.” The Kola Superdeep Borehole, the deepest hole ever drilled on Earth, reached a staggering 12 ...
A high-risk mission to Thwaites Glacier, Antarctica's "doomsday glacier," faced setbacks as instruments became trapped deep ...
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