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'Freak of nature': Greenland ice may be churning like molten rock inside
Scientists studying the Greenland Ice Sheet have found evidence that massive layers of refrozen meltwater deep beneath the ...
A persistent "gravity hole" beneath Antarctica gives scientists a window into Earth's deep interior, showing how processes far below reshape the planet's gravity field over millions of years.
Hike north on the Appalachian Trail and the scenery slowly transforms. Rugged, steep ridgelines in Tennessee and Virginia soften into the broad summits and smooth peaks of Pennsylvania and New Jersey.
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