Add Yahoo as a preferred source to see more of our stories on Google. A Polar vortex has covered the Philadelphia region under a canopy of frigid temperatures, but many people may not realize what a ...

A fresh blast of Arctic air is poised to spill across a wide swath of the United States, and the latest polar vortex map makes clear which regions are most exposed. Forecast models show a sharp ...

Add Yahoo as a preferred source to see more of our stories on Google. As temperatures rise, the timing of the ice thaw changes. Vincent Denarie via Arctic Report Card The Arctic is transforming faster ...

Persistent warming in the Arctic is pushing the region into “uncharted territory” and increasingly affecting the continental United States, scientists said Tuesday. “We’re seeing this continued ...

The Arctic permafrost thaw is hazardous to the livelihood, safety, health, food security, and the infrastructure of communities living in Arctic regions, an international group of scientists have ...

After millennia as a carbon deep-freezer for the planet, regional hotspots and increasingly frequent wildfires in the northern latitudes have nearly canceled out that critical storage capacity in the ...