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 ...

Mesa Arch at Sunrise, Canyonlands National Park

Mesa Arch at Sunrise, Canyonlands National Park

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Single Pine Tree Atop Sandstone Formation, Zion, Utah

Single Pine Tree Atop Sandstone Formation, Zion, Utah

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Giant Sequoia Trees, Mariposa Grove, Yosemite NP

Giant Sequoia Trees, Mariposa Grove, Yosemite NP

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Greyhound Rock Beach, Santa Cruz County, California

Greyhound Rock Beach, Santa Cruz County, California

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Ala Moana Beach Park, Oahu, Hawaii

Ala Moana Beach Park, Oahu, Hawaii

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Plain Tree in Crimson Twilight, Kentucky

Plain Tree in Crimson Twilight, Kentucky

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Buzzards' Roost, Fall Creek Falls State Park, Tennessee

Buzzards' Roost, Fall Creek Falls State Park, Tennessee

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Southern Oregon Pacific Ocean Cliffs, Blacklock Point

Southern Oregon Pacific Ocean Cliffs, Blacklock Point

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Oregon Islands, National Wildlife Refuge, Oregon

Oregon Islands, National Wildlife Refuge, Oregon

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Lake Russell, Oregon Cascades

Lake Russell, Oregon Cascades

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Blue Spring State Park, Florida

Blue Spring State Park, Florida

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Waterfall, Willamette National Forest, Oregon

Waterfall, Willamette National Forest, Oregon

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Reaching Through the Giant Forest, California

Reaching Through the Giant Forest, California

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Kepler Track, South Island, New Zealand

Kepler Track, South Island, New Zealand

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Rutledge Falls, Coffee County, Tennessee

Rutledge Falls, Coffee County, Tennessee

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