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 ...

Afternoon Offshores, Hermosa Beach, California

Afternoon Offshores, Hermosa Beach, California

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Golf Course, Atwood Lake Resort, Dellroy, Ohio

Golf Course, Atwood Lake Resort, Dellroy, Ohio

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Mystic Tarn, Mount Rainier, Washington

Mystic Tarn, Mount Rainier, Washington

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Pike's Falls, Windham County, Vermont

Pike's Falls, Windham County, Vermont

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Ramona Falls, Mount Hood Wilderness, Oregon

Ramona Falls, Mount Hood Wilderness, Oregon

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Yellow Leaves on Tree in Autumn Photo

Yellow Leaves on Tree in Autumn Photo

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Gray Wolf River Trail, Olympic National Park

Gray Wolf River Trail, Olympic National Park

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Change Of Season, Sommer-Linde (Tilia Platyphyllos)

Change Of Season, Sommer-Linde (Tilia Platyphyllos)

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Mount Tundra and Wonder Lake, Denali National Park

Mount Tundra and Wonder Lake, Denali National Park

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Ranger Creek Falls, South Cumberland Recreation Area

Ranger Creek Falls, South Cumberland Recreation Area

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Autumn Forest, Percy Warner Park, Nashville

Autumn Forest, Percy Warner Park, Nashville

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Ash Cave, Hocking Hills State Park, Ohio

Ash Cave, Hocking Hills State Park, Ohio

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Lake Powell, Glen Canyon, Utah

Lake Powell, Glen Canyon, Utah

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Salt Flats and Panamint Mountains, Death Valley

Salt Flats and Panamint Mountains, Death Valley

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McKenzie Lava Fields, Willamette National Forest

McKenzie Lava Fields, Willamette National Forest

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