Arctic [adjective]

The BioNTech vaccine is already difficult to distribute—it must be kept at sub-arctic temperatures and administered in two doses several weeks apart.

The researchers’ calculations assume that, like some arctic hunter-gatherers today, ancient humans acquired 45 percent of their calories from animal protein.

How to dress for cold weather, according to an arctic researcher.

We were glad our test piece arrived just before an arctic air mass spilled over the Continental Divide, putting us in the deep freezer for a week.

Also gone from the branding is the caricature of an arctic child in a fur-collared coat.

It was depressing to think of going to bed in such circumstances with the yelling of an Arctic storm for a lullaby.

When it cleared, the valley was a solid expanse of white, and the stars shone out as if in an Arctic sky.

This shelter, however, was sufficient in the long summer day of the Arctic regions.

After the warmth of the girl's greeting, this other was like a plunge into the Arctic chill of his northern retreat.

The southern parts of the Arctic islands, especially Banksland, belong to it also.