<p>An aurora adds intense color to the skies above Canada's Yukon. Hundreds of thousands of tourists make summer pilgrimages to the Arctic frontier, where they find glaciated peaks, untouched wilderness, scenic splendors, and abundant wildflowers and wildlife.</p><p>Photographer Paul Nicklen has spent two decades capturing images of the Arctic and Antarctica, a "remote, raw, unforgiving, beautiful, and yet extremely fragile world."</p><p><a href="http://shop.nationalgeographic.com/ngs/browse/productDetail.jsp?productId=6200511&amp;code=NG25084">Enjoy more photos and buy the book <em>Polar Obsession</em> »</a></p>

Aurora, Yukon

An aurora adds intense color to the skies above Canada's Yukon. Hundreds of thousands of tourists make summer pilgrimages to the Arctic frontier, where they find glaciated peaks, untouched wilderness, scenic splendors, and abundant wildflowers and wildlife.

Photographer Paul Nicklen has spent two decades capturing images of the Arctic and Antarctica, a "remote, raw, unforgiving, beautiful, and yet extremely fragile world."

Enjoy more photos and buy the book Polar Obsession »

Photograph by Paul Nicklen

Polar Obsession Photos

See images of Arctic and Antarctic landscapes and wildlife, like polar bears, penguins, leopard seals, and more, and buy prints, from National Geographic.

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