Warming temperatures may be changing the ways ice forms, making it more likely to stick to and injure polar bears in two far ...

National Geographic Explorer-in-Residence Enric ... Ikummaq tells me the names for a few Arctic animals. An aarluk—“kills everything”—is a killer whale; a tingugliktuq—“bad liver, ...

But at National Geographic’s request ... A few hundred beavers won’t reengineer the Arctic. But the animals may be heading north in Canada and Siberia too, and they reproduce quickly.

This story appears in the October 2017 issue of National Geographic magazine ... Swells of Siberian tundra roll north toward the Arctic Ocean; a reindeer herd grazes on a distant crest.

Kerby is a trained ecologist, geographer and photographer whose career has largely been centered on a quest to understand nature’s patterns and sharing his discoveries. Phenology, or the seasonal ...