Nature

The origin of life on Earth is not well understood, but it is known to have occurred at least 3.5 billion years ago, during the hadean or archean eons on a primordial Earth that had a substantially different environment than is found at present. These life forms possessed ...

Glen Ellis Falls, White Mountain National Forest, New Hampshire

Glen Ellis Falls, White Mountain National Forest, New Hampshire

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Clouds Over Eldorado Peak at Sunset, Washington

Clouds Over Eldorado Peak at Sunset, Washington

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Hall of Mosses, Olympic National Park, Washington

Hall of Mosses, Olympic National Park, Washington

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Autumn Leaves in the Evening Light

Autumn Leaves in the Evening Light

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Close Up of the Volcanic Crater

Close Up of the Volcanic Crater

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Lava Flow Meeting the Ocean at Twilight, Kilauea Volcano

Lava Flow Meeting the Ocean at Twilight, Kilauea Volcano

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Kapa'a Sunrise, Kauai, Hawaii

Kapa'a Sunrise, Kauai, Hawaii

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Autumn Raindrops on Oak Leaf

Autumn Raindrops on Oak Leaf

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Grand Teton Reflections, Yellowstone

Grand Teton Reflections, Yellowstone

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Colombo, Vacation in SriLanka, Sri Lanka

Colombo, Vacation in SriLanka, Sri Lanka

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Sunrise at Otter Cliffs, Acadia National Park, Maine

Sunrise at Otter Cliffs, Acadia National Park, Maine

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Desolation Wilderness, Eldorado National Forest, California

Desolation Wilderness, Eldorado National Forest, California

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The Thaw, Lassen Volcanic National Park, California

The Thaw, Lassen Volcanic National Park, California

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Great Smoky National Park, Tennessee

Great Smoky National Park, Tennessee

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Mount Moran in Autumn, Wyoming

Mount Moran in Autumn, Wyoming

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