The polar vortex is an enormous, 3-dimensional ring of winds that surrounds the North and South poles during each hemisphere’s winter. The polar vortex influences the jet stream, which can bring cold winter weather to the U.S. and Europe.
On Trump’s way out of the White House, his administration demolished a law that protects migratory birds, putting over 1,000 species at risk. The Biden administration can still salvage it, but only if they act swiftly.
A crack on the Antarctic ice shelf grew dramatically in late 2020 into 2021. Scientists are watching to see if the rapidly accelerating crack will cause the shelf to rip apart before Antarctica’s sunlit summer season – going on now – comes to an end.