The Arctic National Wildlife Refuge in Alaska has long protected survivors of the Ice Age, but this frozen fortress is melting due to climate change. For the caribou, musk oxen, polar bears and Arctic foxes, the Ice Age is slipping away.
Discover the wildlife and landscapes of Portugal, from its forests to coasts.
Discover the true character of one of the planet’s largest land mammals, the hippo bull.
Meet the uniquely American horse breeds that helped shape our nation.
