<p>Under a night sky, an ice climber thwacks his way up the ice of Athabasca Glacier, which is rapidly retreating due to warmer temperatures.</p>

Under a night sky, an ice climber thwacks his way up the ice of Athabasca Glacier, which is rapidly retreating due to warmer temperatures.

Photograph by Paul Zizka, Aurora

Seven adventures disappearing on a changing planet

To celebrate Earth Day, check out unique adventures threatened by human impact on each continent

For almost half a century, Earth Day has served as a moment to stop and consider our planet—both its wonders and its health. For those, who yearn to experience some of its most remote natural splendors first hand, here’s a selection of photos of great adventures to be had on each continent in places that are threatened by human impacts.

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