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 ...

Autumn Forest and Landscape Color

Autumn Forest and Landscape Color

1600x1200, 327K

Picture Lake, Mount Shuksan, Washington

Picture Lake, Mount Shuksan, Washington

1024x768, 216K

Alpine Scenic, Mount Washington, Washington

Alpine Scenic, Mount Washington, Washington

1024x768, 279K

Harris Beach State Park, Brookings, Oregon

Harris Beach State Park, Brookings, Oregon

1024x768, 108K

Alive With Color, Beautiful Sunset

Alive With Color, Beautiful Sunset

800x600, 96K

Morning Fog, Percy Warner Park, Tennessee

Morning Fog, Percy Warner Park, Tennessee

1024x768, 305K

Fitzroy Peak, Andes Mountains, Argentina

Fitzroy Peak, Andes Mountains, Argentina

1024x768, 177K

Aspen Trees, City of Rocks, Idaho

Aspen Trees, City of Rocks, Idaho

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Peaceful Waters, Colorado River, Colorado

Peaceful Waters, Colorado River, Colorado

1024x768, 306K

Night Lights, Aurora Borealis, Alaska

Night Lights, Aurora Borealis, Alaska

1024x768, 126K

Chocorua Mountain, Chocorua, New Hampshire

Chocorua Mountain, Chocorua, New Hampshire

1024x768, 328K

Rainbow Falls, Mammoth Lake, Sierra Nevada, California

Rainbow Falls, Mammoth Lake, Sierra Nevada, California

1024x768, 193K

Hidden Lake, Superior, Montana

Hidden Lake, Superior, Montana

1024x768, 325K

Old Growth Forest, Scottish Highlands

Old Growth Forest, Scottish Highlands

1024x768, 416K

Chimney Rock and Wildcat Hills, Nebraska

Chimney Rock and Wildcat Hills, Nebraska

1024x768, 335K