Map of where bears live in North America
Cruises to Crossing the Arctic Circle | Holland America Line Cruises
US braced for -50C temperatures as polar vortex bites
Home - American Polar Society
America and Russia work together during challenging times | WWF Arctic
President Trump's New Polar Strategy Is the First Step to Defending the Arctic | Military.com
Environment America takes legal action to protect polar bears in Alaska | Environment America
Polar Imperative: A History of Arctic Sovereignty in North America by Shelagh D. Grant
See all 70 polar bears in North American Zoos (interactive) - oregonlive.com
Polar Bear Watching Trips: Tailor-Made Ideas and Group Tours | Wildlife Worldwide
In the Arctic National Wildlife Refuge, polar bears and oil drilling do not mix | Environment America
We're not the only ones... Arctic storm with POLAR VORTEX cripples America | Nature | News | Express.co.uk
In pictures: Polar vortex strikes North America - BBC News
Polar Vortex Building in North America
As Polar Vortex Stirs, Deep Freeze Threatens U.S. and Europe - Bloomberg
Weakening polar vortex may yield longer, harsher winters in North America | AccuWeather
Polar Bears Migrate from America to Russia as Temperatures Rise
In pictures: Polar vortex strikes North America - BBC News
The U.S. is about to get a potent polar vortex blast - Science
From Trout to Polar Bears: How the Environmental Movement Lost America - The American Conservative
What Does 'America First' Look Like in the Arctic? | RAND
Arctic Weather Plunges into North America
