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Presto!
Can invisible technology make Harry Potter disappear?
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Clouded comeback?
Smithsonian zoologists are attempting to breed the rare clouded leopard
Organization Man
Carl Linnaeus, born 300 years ago, brought order to nature’s blooming, buzzing confusion
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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
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Return of the Sun Cult
In Peru, scientists discover the oldest solar observatory in the Americas
Interview: Daniel Gilbert
What will make you happy? A social scientist explains why it’s so hard to predict
Wild Things: Life as We Know It
Squid light shows, monkey hugs and chickadee alarms
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EcoCenter: Greener Living
Smithsonian.com takes a look at common and easy ways to go green
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