Warmth is weakening the polar vortex. Here’s what it means for extreme cold.
While scientists say that there is not evidence that extreme cold is becoming more frequent or intense, a growing body of research is finding that rising temperatures in the Arctic are weakening ...
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Inside the harsh lives of wolves living at the top of the world
Our writer spent 30 hours traveling with arctic wolves and gained a new appreciation for these predators of the tundra. Wolves pick at the remains of a muskox. To get this image, photographer ...