Average air temperatures in the Arctic were more than 3 degrees Fahrenheit above normal in 2019, US scientists say. It's the second-hottest year on record since 1900.
The Arctic's snow and ice are the planet's air-conditioner, reflecting the sun's energy back into space and keeping temperatures around the North Pole cool.
But a new report shows there are signs that this critical cooling system may be breaking down, and the impacts of what is happening in the Arctic are being felt by people and ecosystems far beyond.In 2019, average air temperatures in the Arctic were 1.9 degrees Celsius above normal, the second-hottest recorded since 1900, according to the National Oceanic and Atmospheric Administration's annual Arctic Report Card, published Tuesday.
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