Science
The Arctic hasn’t been this warm for 3 million years – EarthSky
The last time CO2 concentrations reached today’s level was 3 million years ago, during the Pliocene Epoch. Hear from geoscientists who see evolving conditions in…
Ice floe drifting in Svalbard, Norway. Image via Sven-Erik Arndt/ Arterra/ Universal Images Group/ Getty Images
By Julie Brigham-Grette, University of Massachusetts Amherst and Steve Petsch, University of Massachusetts Amherst
Every year, sea ice cover in the Arctic Ocean shrinks to a low point in mid-September. This year it measures just 1.44 million square miles (3.74 million square km), the second-lowest value in the 42 years since satellites began taking measurements. The ice today covers only…
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