Inside the harsh lives of the wolves living at the top of the world

From National Geographic:

In the blue light of an early Arctic morning, seven wolves slid across a frozen pond, yipping and squealing and chasing a chunk of ice about the size of a hockey puck.

The pond was opalescent at that hour, a mirror of the universe, and the wolves also seemed otherworldly in their happiness. Back and forth across the pond they chased, four pups scrambling after the puck and three older wolves knocking them down, checking their little bodies into frozen grass at the shore. In my notebook, in letters made nearly illegible by my shivering, I wrote the word “goofy.”