In the frozen reaches of Greenland, a humble dog sits beneath a sky smeared with pale sun. Its breath makes tiny clouds in the cold air. Its paws, broad and calloused, press into the snow. This is the ...

In the natural world, scientists are constantly searching for words and phrases to describe different phenomena. As a result, ...

Long before the familiar lions and cheetahs roamed the open savannas, there was a cat whose world looked very different.