Climate change is an urgent problem in the Arctic. From renewable energy to avalanche protection, here's what we can learn from how people there are protecting their way of life.
The Arctic town of Longyearbyen, Norway, is warming faster than anywhere else on Earth. It sits in an island chain where average temperatures are up and sea ice is declining. Life there is having to adapt to longer summers, and shorter, warmer winters. Special correspondent John Bevir traveled there to meet some of the people living on the frontline of a changing world.