A significant meteorological event is poised to impact vast regions of the United States. The polar vortex, a large area of low pressure and cold air surrounding the Earth’s poles, is expected to ...
The polar regions are the coldest places on Earth. During the summer, the poles receive 24 hours of sunlight, but during the winter the sun is rarely visible. Animals that inhabit nature’s freezers ...
"When we run the numbers, we show declining reproduction size in this region over the last four decades," Archer said. Polar bear recovering from immobilization. Stephen Atkinson via Polar Bears ...