Operation IceBridge is an aerial survey that measures both land and sea ice in the Arctic and the Antarctic. There are many reasons to monitor the polar regions. The cryosphere is essential in helping to maintain global climate. One important reason is to investigate sea level rise. Land ice can cause sea levels to rise, when it melts, by adding
This short article is an U.S. Fish and Wildlife Service fact sheet about Ursus maritimus, the Polar Bear. It covers basic information, including: appearance, feeding habits, reproduction, adaptations, and protection.