Nature

The first form of life to develop on the Earth were microbes, and they remained the only form of life until about a billion years ago when multi-cellular organisms began to appear. Microorganisms are single-celled organisms that are generally microscopic, and smaller than ...

Lamar Valley Sunset Rainbow, Yellowstone National Park, Montana

Lamar Valley Sunset Rainbow, Yellowstone National Park, Montana

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Avalon Leaf Close-up Photo

Avalon Leaf Close-up Photo

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Mono Lake, Sierra Nevada, California

Mono Lake, Sierra Nevada, California

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Lower Yellowstone Falls, Yellowstone National Park

Lower Yellowstone Falls, Yellowstone National Park

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Cape Lookout State Park, Oregon

Cape Lookout State Park, Oregon

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Reelfoot Lake, near Tiptonville, Tennessee

Reelfoot Lake, near Tiptonville, Tennessee

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Natural Bridges State Park, Santa Cruz, California

Natural Bridges State Park, Santa Cruz, California

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Majestic El Capitan, Yosemite National Park, California

Majestic El Capitan, Yosemite National Park, California

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Aitutaki, Cook Islands, South Pacific

Aitutaki, Cook Islands, South Pacific

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Ouem El Ma Lake Oasis, Mandara Lakes, Libya

Ouem El Ma Lake Oasis, Mandara Lakes, Libya

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Calf Creek Falls, Grand Staircase-Escalante National Monument, Utah

Calf Creek Falls, Grand Staircase-Escalante National Monument, Utah

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East African Sunset Scene Wallpaper

East African Sunset Scene Wallpaper

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Crater Lake Reflection Landscape, Southern Oregon

Crater Lake Reflection Landscape, Southern Oregon

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Grand Canyon National Park, Arizona

Grand Canyon National Park, Arizona

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Annapurna II (7937m) from Ghyaru Marsyangdi Valley, Himalayas, Nepal

Annapurna II (7937m) from Ghyaru Marsyangdi Valley, Himalayas, Nepal

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