Journeys to the Center of the Earth

Our planet's core powers a magnetic field that shields us from a hostile cosmos. But how does it really work? 

RELATED TAGS: EARTH SCIENCE
center-of-the-earth-cover
On the remote Kola Peninsula in northwestern Russia, amid the rusting ruins of an abandoned scientific research station, is the deepest hole in the world. Now covered and sealed with a welded metal plate, the Kola Superdeep Borehole, as it’s called, is a remnant of a largely forgotten Cold War race that aimed not at the stars, but at Earth’s interior. A team of Soviet scientists began drilling at Kola in the spring of 1970, with the goal of penetrating as far into Earth’s crust...
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