Hiker stands on top of a cliff admiring the rugged view, Nordradalur, Streymoy island, Faroe islands, Denmark, Europe

One man on top of a rock admiring the village of Tjornuvik in the misty weather, Sunda municipality, Streymoy island, Faroe islands, Denmark, Europe

Hiking in White Sands National Park, New Mexico, United States of America, North America

A man exploring the vast landscape of White Sands National Park, New Mexico, United States of America, North America

Mountain hut on top of mountains of Gran Sasso National Park at dusk, Campo Imperatore, Apennines, Abruzzo, Italy, Europe

Man enjoys the view of the old amphitheatre and snowy peak at sunset, Alba Fucens, L'Aquila, Apennines, Abruzzo, Italy, Europe

Rear view of a man enjoying the view towards the peak of Circeo, Circeo National Park, Latina province, Latium (Lazio), Italy, Europe

Rear view of woman photographing Grossmunster Cathedral and Limmat River with smartphone, Zurich, Switzerland, Europe

Mountain bikers take a break near a moss covered Tibetan chorten in the Himalayas in the Gosainkund region, Nepal, Asia

Mountain bikers cycle along a snow covered slope in the Himalayas with views of the Langtang range in the distance, Nepal, Asia

Mountain biking in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain biking in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain bikes speed past in a blur along a Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Mountain bikers take a rest on an Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Mountain bikers carry their bikes up a snow covered hillside in the Nepal Himalayas with views of the Langtang mountain range, Nepal, Asia

Mountain biking in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain biking in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain bikers in the little village of Sing Gompa in the Gosainkund region in the Himalayas, Langtang region, Nepal, Asia

Mountain bikers cycle along a snow covered slope in the Himalayas with views of the Langtang range in the distance, Nepal, Asia

Mountain bikers descend a snow covered slope in the Himalayas with views of the Langtang range in the distance, Nepal, Asia

Mountain biking in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain biking on a snow covered slope in the Himalayas with views of the Langtang mountain range in the distance, Nepal, Asia

Mountain biking along a Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Canyons Around Pluto's North Pole

Nuraghe Sceri, Archaeological site, Ilbono, Nuoro, Sardinia, Italy, Europe

Hightech windmills, some standing 500 feet high when their blades are vertical, hum on the Altamont Pass of California as they produce clean electricity. Wind energy is the world's fastest growing energy source, expanding 25, 35 percent each year. In 2001, roughly 6000 megawatts of new wind capacity was installed around the world, enough to power 2 million American homes.

The Pacific Crest Trail near Hart's Pass in the Pasayten Wilderness, Okanogan-Wenatchee National Forest, about 35 miles from the Canadian border in the North Cascades in Washington

Man and woman tasting white wine

Man and woman tasting white wine

Mid adult couple having picnic in park