Bierman P When the Ice Is Gone What a Greenland Ice Core Reveals 2024

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Bierman P When the Ice Is Gone What a Greenland Ice Core Reveals 2024 | 24.89 MB

Title: When the Ice Is Gone
Author: Paul Bierman​

Description:
Paul Bierman's realization that Greenland's ice sheet melted when Earth was no warmer than today sounds an alarm for our planet.
In 2018, lumps of frozen soil, collected from the bottom of the world's first deep ice core and lost for decades, reappeared in Denmark. When geologist Paul Bierman and his team first melted a piece of this unique material, they were shocked to find perfectly preserved leaves, twigs, and moss. That observation led them to a startling discovery: Greenland's ice sheet had melted naturally before, about 400,000 years ago. The remote island's ice was far more fragile than scientists had realized-unstable even without human interference.
In When the Ice Is Gone, Bierman traces the story of this extraordinary finding, revealing how it radically changes our understanding of the Earth and its climate. A longtime researcher in Greenland, he begins with a brief history of the island, both human and geological, explaining how...

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