The polar struggle to survive is even harder in winter, missing a single rare prey can be lethal. Well-adapted anatomy is crucial, but also tricks such as isolation with ...

After non-stop summer months, the polar regions have expanded maximally, abundant food turns even the bears sociable. However the shortening of days soon starts reversing ...

In the polar regions, from the vast 'moderate' taiga as in Canada north to the Ice seas, and in ice-only Antarctica, seasons are extreme in day length - and resulting cli ...

The Earth's large, deep calcareous caves are virtually inaccessible and therefore barely explored - requiring expert diving where flooded. Some of its wildlife is as stra ...