The matter is dealt with in two memoirs, both by Dr. Nansen, the first on the oceanography of the North Polar Basin, the second on hydrometers and the surface tension of liquids. The second memoir ...

In Under Thin Ice, a documentary from The Nature of ... survive in the polar extremes are now invading and competing for resources and space. Red foxes are encroaching farther north, competing ...

with many body characteristics adapted for cold temperatures, for moving across snow, ice, and open water, and for hunting the seals which make up most of its diet. Although most polar bears are ...

Polar bears live in the frozen Arctic landscape, the northernmost point on the planet. They are not found in Antarctica, even though the North and South poles are both snow-covered, icy-cold ...