Lost samples from a secret army base reveal that Greenland's ice vanished 416,000 years ago. That means it could melt way faster than expected.

Lost samples from a secret army base reveal that Greenland's ice vanished 416,000 years ago. That means it could melt way faster than expected.

Lyle B. Hansen and Chester Langway inspecting the sub-ice core from the Project Iceworm drilling.Photograph by David Atwood, U.S. Army-ERDC-CRREL, courtesy AIP Emilio Segrè Visual Archives. <ul> <li… [+4218 chars]

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