Caribou migration routes are under threat.

Each year, caribou make migrations in their thousands across the Arctic. But as the climate warms, their ancient pathways are changing - and so is the ground itself.

#OurFrozenPlanet tells stories that land the urgency of climate change whilst inspiring hope that change is possible for us and the health of our planet.

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By: BBC Earth
Title: What Global Warming Means for Caribou | Our Frozen Planet | BBC Earth
Sourced From: www.youtube.com/watch?v=i730XRQm0A8