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Science / Our Planet

When scouts discover a suitable plant near their nest, they leave a pheromone, or chemical, trail, to efficiently guide legions of worker ants to it. The workers soon stream back to the nest in six-inch-wide columns bearing loads up to ten times their own weight.

Small Matters

Millions of years ago, leafcutter ants learned to grow fungi. But how? And why? And what do they have to teach us?

Enormous gypsum crystals in a Naica cavern

Crystal Moonbeams

A pair of Mexican miners stumble upon a room filled with what could be the world’s largest crystals

Joinery techniques in even the largest modern structures are similar to those used by Henry David Thoreau to build his simple cabin.

Building to a Different Drummer

Today’s timber frame revivalists are putting up everything from millionaire mansions to a replica of Thoreau’s cabin

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Keepers of the Flames

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Prince of Tides

Before “ecology” became a buzzword, John Steinbeck preached that man is related to the whole thing

This image shows an about 1.6 inch (4 cm) large male Yellow-winged Darter (Sympetrum flaveolum) from the side

Dragonfly Dramas

Desert Whitetails and Flame Skimmers cavort in the sinkholes of New Mexico’s Bitter Lake Refuge

The sulfuric lake of Kawah Ijen Mountain's cauldron, Indonesia

Fire and Brimstone

A long-outdated approach to sulfur mining sends hundreds of Javanese workers deep into the crater of an active volcano

A desert tortoise (emerging from its den) may use the same burrow for many years.

Tunnel Vision

Arizona Naturalist Pinau Merlin celebrates life in the desert by keeping a close eye on it

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Getting in Deep

The unending quest for oil has now led drillers to vast reserves lying more than a mile beneath the surface of the Gulf of Mexico

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Heavenly Harbingers

High altitude, night-shining clouds are becoming more common, which could signal climate changes

Breathing Fire

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Message in a Bottle

By studying objects cast up on our shores, researcher Curtis Ebbesmeyer traces the flow of ocean currents

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Seeing Science Six Miles Up

City patterns, farm history, ancient seabeds, old mountains and new, the why of clouds: take a look

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Master of the Deep

Before Smithsonian scientists do underwater research, Michael Lang makes them seaworthy.

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It’s Camelot in the Desert

For Dromedary Trekkers in Australia’s Outback, it’s Camelot in the Desert

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Newton’s Vice

Some say alchemy inspired our greatest scientist

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Kudzu: Love It — or Run

Aggressive weed that “grows like the devil” and will not die is manna for sheep, cows and folks who use it to cure hangovers, weave baskets and make jelly

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Turning a New Leaf

Every six months Smithsonian horticulturists give the Haupt Garden a makeover from the roots up

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Vostok: Looking for Life Beneath an Antarctic Glacier

In what may be the world’s largest lake ever seen by a human eye, the search begins

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