Alaska: Earth's Frozen Kingdom: Summer

Three-part series following pioneering Alaskans, both animal and human, as they battle the elements and reap the benefits of nature's seasonal gold rush. One of the most iconic wildernesses on the planet, Alaska is America's last frontier and by far its biggest state. It has deep forests and vast mountain ranges, and a third of it sits above the Arctic Circle. In this wild place, grizzly bears grow big on a sudden wealth of salmon and a huge male moose finds unlikely ways to impress a female. No season brings more surprises than an Alaskan summer. It lures hummingbirds up from the tropics, exposes deserts in the Arctic and relies on parachuting firefighters to tackle forest fires in its vast wilderness. Summer is a narrow window of plenty, when the land is bathed in 24-hour sunlight - but in this land of extremes, you can have too much of a good thing. episode 2