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Science / Our Planet

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Earth & Sky Photo Contest Winners 2013

These award-winning photos, chosen from submissions by photographers in 45 countries, reveal the natural beauty of the night sky

Staghorn coral is listed as threatened under the U.S. Endangered Species Act. NOAA Fisheries has proposed it be reclassified as endangered.

Endangered Ocean Creatures Beyond the Cute and Cuddly

Marine species threatened with extinction aren’t just whales, seals and turtles—they include fish, corals, mollusks, birds, and a lone seagrass

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The World According to Twitter, in Maps

A new geographic analysis of millions of tweets provides a remarkably broad view of humanity, by language, location and other factors

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The Water On the Moon Probably Came From Earth

New isotopic analysis of hydrogen in Apollo-era Moon rocks shows that the water locked inside them hails from our planet

Helpless babe or capable professional navigator?

Baby Weddell Seals Have the Most Adult-Like Brains in the Animal Kingdom

The newborn seal pups possess the most well-developed brains compared to other mammals, but that advantage comes with a cost

The National Zoo's two giant pandas don't know how to mate with each other. But thanks to artificial insemination Mei Xiang (L) and Tian Tian (R) have produced two cubs, and a third may be on the way. Photo courtesy of the National Zoo

How Does Science Help Pandas Make More Panda Babies?

A behind-the-scenes look at the ways the National Zoo assists Washington’s most famous sexually frustrated bear couple

Our bodies convert asparagusic acid into sulfur-containing chemicals that stink—but some of us are spared from the pungent aroma.

Ask Smithsonian

Why Asparagus Makes Your Urine Smell

Our bodies convert asparagusic acid into sulfur-containing chemicals that stink—but some of us are spared from the pungent odor

VOTO, a new device that converts the heat from a fire into readily usable electricity.

Five Innovative Technologies that Bring Energy to the Developing World

From soccer balls to cookstoves, engineers are working on a range of devices that provide cheap, clean energy

How many unborn brothers and sisters did this sand tiger shark devour to be here today?

Baby Sand Tiger Sharks Devour Their Siblings While Still in the Womb

This seemingly horrific reproduction strategy may be a way for females to better control which males sire her offspring

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The Strange Beauty of David Maisel’s Aerial Photographs

A new book shows how the photographer creates startling images of open-pit mines, evaporation ponds and other sites of environmental degradation

Emperor penguins swimming

14 Fun Facts About Penguins

Which penguin swims the fastest? Do penguins have teeth? Why do penguins sneeze? How is penguin poop useful?

Flamingos depend on plant-derived chemical compounds to color their feathers, legs and beaks.

For Some Species, You Really Are What You Eat

Flamingos, shrimp and many other animals use chemical compounds found in their diets to color their exteriors

A difference of nearly four decades: at top, a ski area in Aspen, Colorado last year, captured by Ron Hoffman; at bottom, the same location in 1974, shot by Dustin Wesley.

Before and After: America’s Environmental History

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Which Primate Is the Most Likely Source of the Next Pandemic?

To help anticipate the next outbreak of an emerging infectious disease, scientists scrutinize our closest relatives in the animal kingdom

By combining genes from different bacteria species, scientists created E. coli that can produce diesel fuel from fat.

Genetically Modified E. Coli Bacteria Can Now Synthesize Diesel Fuel

By combining genes from different bacteria species, scientists created E. coli that can consume fat and excrete diesel fuel

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10 Things We’ve Learned About the Earth Since Last Earth Day

Pigeon-eating catfish, Antarctic trash, and more: A list of surprising, alarming and exciting discoveries about our planet from the past year

New research finds that the superstorm’s massive ocean waves produced seismic activity as far away as Seattle.

Hurricane Sandy Generated Seismic Shaking As Far Away As Seattle

The superstorm’s massive ocean waves produced low-level seismic activity across the entire country

The rare coealacanth’s genome is slowly evolving—and contrary to prior speculation, it probably isn’t the common ancestor of all land animals.

DNA Sequencing Reveals that Coelacanths Weren’t the Missing Link Between Sea and Land

The rare fish’s genome is slowly evolving—and contrary to prior speculation, it probably isn’t the common ancestor of all land animals

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The Colorado: America’s Most Endangered River

A new report points to drought, climate change and increased demand for water as the reasons the iconic river no longer reaches the sea

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Five Surprising Facts About the Common Cold

How far do germs travel after a sneeze? Can you really catch a cold if it’s chilly outside? And does vitamin C actually help battle cold symptoms?

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