This Arctic heat wave has been unusually long-lived. The darkest reds on this map of the Arctic are areas that were more than 14 degrees Fahrenheit warmer in the spring of 2020 compared to the recent 15-year average. Joshua Stevens/NASA Earth Observatory

100 degrees in Siberia? 5 ways the extreme Arctic heat wave followed a disturbing pattern

The Arctic is warming about twice as fast as the planet as a whole, with serious consequences. Scientists have been warning about this for decades.
Scientists on Arctic sea ice in the Chukchi Sea, surrounded by melt ponds, July 4, 2010. NASA/Kathryn Hansen

Melting Arctic sends a message: Climate change is here in a big way

Climate change is transforming the Arctic, with impacts on the rest of the planet. A geographer explains why he once doubted that human actions were causing such shifts, and what changed his mind.

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