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A sidewinder coils and flicks its forked tongue.
A sidewinder coils and flicks its forked tongue.
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Pedestrians pass a variety of street food vendors in Rockefeller Center.
Pedestrians pass a variety of street food vendors in Rockefeller Center.
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A park ranger leads tourists across a wooden footbridge in Glacier National Park, Montana.
A park ranger leads tourists across a wooden footbridge in Glacier National Park, Montana.
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A robed man flips through a book and looks around thoughtfully.
A robed man flips through a book and looks around thoughtfully.
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A dinosaur kicks a rock that tumbles down a slope and becomes an asteroid in a computer generated animation.
A dinosaur kicks a rock that tumbles down a slope and becomes an asteroid in a computer generated animation.
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Two-by-fours lean against a rooftop where construction workers build a water tank in a New York City neighborhood.
Two-by-fours lean against a rooftop where construction workers build a water tank in a New York City neighborhood.
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A sidewinder snake coils near rocks and strikes at a mouse.
A sidewinder snake coils near rocks and strikes at a mouse.
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An archaeologist explores the ruins of Berenike, Egypt.
An archaeologist explores the ruins of Berenike, Egypt.
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An artist stands on a bridge and sketches a distant building.
An artist stands on a bridge and sketches a distant building.
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A tortoise munches grass in a California desert.
A tortoise munches grass in a California desert.
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A photographer in a protective cube watches grizzly bears investigate a dummy.
A photographer in a protective cube watches grizzly bears investigate a dummy.