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Madeleine and Thomas Nash braved high altitudes and frigid temperatures for “Chronicling the Ice”
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Long before global warming became a cause célà¨bre, Lonnie Thompson was extracting climate secrets from ancient glaciers
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Meet Cristián Samper, Acting Secretary
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In Peru, scientists discover the oldest solar observatory in the Americas
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The New World’s Oldest Calendar
Research at a 4,200-year-old temple in Peru yields clues to an ancient people who may have clocked the heavens
Carl Linnaeus, born 300 years ago, brought order to nature’s blooming, buzzing confusion
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Smithsonian.com takes a look at common and easy ways to go green
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A collection of Smithsonian’s recent environmental stories
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