But at the end of the journey, at least we knew we were properly away, in summer in the middle of northern winter.

In the northern winter, it has a nearly cosmopolitan distribution across the world's marine coasts.

Lemmings do not hibernate through the harsh northern winter.

These are gregarious ducks, mainly found on fresh water or on estuaries, though the greater scaup becomes marine during the northern winter.

Even at a distance of 250 million light-years, this chain of galaxy clusters extends more than 40 across the northern winter sky.