Skip to main content

Subscribe to Smithsonian magazine and get a FREE tote.

Science / Our Planet

Not only does it cost the Mint more to make a penny than it's worth, but making the penny has an environmental cost, too.

Age of Humans

How Much Does it Really Cost (the Planet) to Make a Penny?

All that copper and zinc for a coin most people throw away—what’s the sustainable solution?

Why Do Humans Have Canine Teeth and More Questions From Our Readers

You asked, we answered

In the Democratic Republic of Congo, trainer Franck Canniet, far right, trains rangers for a confrontation with poachers.

The Fight Against Elephant Poachers Is Going Commando

In central Africa, a former Israeli military trainer and his team are deploying battle-tested tactics to stop the runaway slaughter of elephants

Paradoxically, food aid can cause game like the black curassow to be overhunted.

What’s the Best Way to Help the Amazon’s Indigenous People?

Can a pioneering computer model save the rainforest’s residents from our best intentions?

Yellowstone's Grand Prismatic Spring is the largest hot spring in the park. But what gives it its vivid rainbow colors?

The Science Behind Yellowstone’s Rainbow Hot Spring

The Grand Prismatic Spring might seem photoshopped, but there’s very real science beneath its vibrant colors

Foraging red knots in Mauritania

When the Arctic Gets Warmer, It Also Affects a Tropical Ecosystem Thousands of Miles Away

As spring arrives earlier in far northern Russia, red knots get smaller—and have trouble in their African winter homes

A 2.7-billion-year-old micrometeorite extracted from limestone found in the Pilbara region of Western Australia.

Journey to the Center of Earth

Ancient Spacedust Reveals Surprising Twist in Evolution of Earth’s Early Atmosphere

Mini fossil meteorites are providing new insights about how our ancient atmosphere evolved into its current state

The Black Sea's fish stocks have been plummeting as of late and may be beyond repair.

The Black Sea Is Dying, and War Might Push it Over the Edge

Surrounded by six countries, all with their own agendas, the massive body of water is at risk of becoming another casualty of regional strife

Diamonds squeeze the truth about Earth's core out of experimental samples of iron and lighter elements like oxygen and carbon.

Journey to the Center of Earth

Crushing Pressures Start to Reveal the Truth About Earth’s Core

Iron makes up the bulk of our planet’s core. But now, researchers are getting closer to figuring out what else swirls at the center of the Earth

Modern microscopes can image red blood cells in stunning detail.

Early Microscopes Revealed a New World of Tiny Living Things

A cloth merchant turned a device for checking his wares into an instrument fit for science

"Science fiction is so important to our culture, because it allows us to dream," said Jim Green, director of NASA's planetary science division, at the "Future is Here" festival.

Future Is Here Festival

The Future Is Here Festival Considers Extraterrestrial Life and the Essence of Humanity

In the festival’s final day, speakers turn to the cosmos and our place within it

Researchers sort through finds recovered from trawling in the central section of the Amazon reef.

Shining Light on Brazil’s Secret Coral Reef

The massive, previously unstudied reef is unlike any other known on Earth

Demonstrators on the first Earth Day, Union Square, New York.

Age of Humans

Why Didn’t the First Earth Day’s Predictions Come True? It’s Complicated

More than half a century ago, scientists and activists predicted utter doom for the planet. That hasn’t happened yet, but it’s nothing to cheer about

Severe drought killed this stand of trembling aspen trees, Populus tremuloides, near Fairplay, Colorado.

What Does a Dying Forest Sound Like?

As temperatures rise, scientists scramble to pinpoint trees in danger of drought

Ginseng roots

The Fight Against Ginseng Poaching in the Great Smoky Mountains

A profitable black market for the native shrub pits the National Park Service against poor residents of Appalachia

Workers in Sumatra process an oil palm harvest from the plantation on the left even as the remnants of the natural peat swamp forest in the distance are burned to make way for new plantations.

Journey to the Center of Earth

The Mad Dash to Figure Out the Fate of Peatlands

As the planet’s peat swamps come under threat, the destiny of their stored carbon remains a mystery

Water spreads like inky-blue fingers into mangrove forests along the shore of Australia's Ord River (top). The sediment load in the water shows up as yellow and orange while mudflats stick out like a light blue bull's-eye on the lower left.

Journey to the Center of Earth

These Stunning Satellite Images Turn Earth Into Art

These images illustrate the brutal beauty geologic processes carve into our planet

Page 44 of 106