The Arctic tundra has historically helped reduce global emissions. But rising temperatures and wildfires in the region are changing that, scientists say.

The population of migratory tundra caribou populations has declined ... the Arctic into a region prone to more weather and climate extremes and unwelcome surprises.

Animals have had to adapt to the tundra climate in ways that keep them warm and help them find food. Thick fur and small ears help the Arctic fox retain body heat The Arctic fox lives in a cold ...

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