Science

What explains the vivid colors of the strawberry poison-dart frog?

How Do Tropical Frogs Get Their Stunning Colors?

The vibrant hues that dot the rainforest landscape help them avoid predators and win mates

In Montana, ground squirrels have been tunneling under a Air Force base’s fences and setting off intruder alarms, prompting researchers to look for a solution.

How One Nuclear Missile Base Is Battling Ground Squirrels

In Montana, squirrels have been tunneling under a base's fences and setting off intruder alarms, prompting researchers to strengthen its defenses

None

What’s Behind That Jellyfish Sting?

If you're headed to the beach this weekend: with Jellyfish populations rising, what should you do if you are stung, and why do stings hurt so much?

Greenland may eventually resemble the lush Tongass National Forest in Alaska.

Climate Change Will Green Greenland

Many species of trees and shrubs may take up residence in formerly frozen Greenland, transforming parts of the island into a lush landscape

Astronomers traced 2011 QF99, circled in green, across the sky to find that it shared an orbit with Uranus.

Temporary Companion Leads Uranus in Its Race Around the Sun

A small asteroid that orbits ahead of the seventh planet offers a clearer picture of the ongoing celestial pinball game in the solar system's outer reaches

Each crane is tagged with a radio transmitter (shown on the bird’s left leg) to monitor its location.

Nurture, Not Nature: Whooping Cranes Learn to Migrate From Their Elders

New research shows that the endangered cranes learn to navigate thousands of miles by taking cues from older birds

Valley of the Reclining Woman

Carl Warner’s Mountains Are Made of Elbows and Knees

The British photographer creates convincing landscapes—deserts and rocky scenes—by piecing together photos of nude models

Could life on Earth have been born on Mars?

Cracking the Code of the Human Genome

Did Life Come to Earth From Mars?

Mineralogical clues point to the idea that the early Earth, starved of oxygen and submerged by a vast ocean, needed molecules from Mars to kick start life

New research shows that abnormally cool waters in the Pacific, part of a natural cycle, have masked the warming we should have seen due to greenhouse gas emissions. When the waters go back to normal, global warming will likely accelerate.

Why Global Warming Has Paused—And Why It Will Soon Start Up Again

Abnormally cool waters in the Pacific, part of a natural cycle, have masked the underlying warming caused by humans burning fossil fuels

Red Mural, by Amber Hasselbring

A Butterfly Species Settles in San Francisco’s Market Street

Two advocates track Western tiger swallowtails through the city and use art to encourage residents to think of the fluttering creatures as neighbors

Much like bats and dolphins, some people have developed the ability to analyze bouncing sound waves to generate a picture of their environment.

How Human Echolocation Allows People to See Without Using Their Eyes

Mimicking bats and dolphins, some people have developed the ability to analyze bouncing sound waves to generate a picture of their environment

When job opportunities come through a mobile app

Think You’re Doing a Good Job? Not If the Algorithms Say You’re Not

Relying on data collected through smartphones, Gigwalk says it knows more about its workers than any company ever has

Seljalandsfoss is one of the most beautiful waterfalls in Iceland. Dropping from a 200-foot-high cliff to a deep pool below, this unusual waterfall of the Seljalandsá River has a unique indentation in the rock face that allows visitors to hike behind the picturesque falls. Lush greenery and a wide variety of colorful wildflowers surround the falls. As photographer Mike Reyfman describes, "Getting in touch with the natural wonders of Iceland can be a very exhilarating and enlightening experience. Located along the south coast is one of its most breathtaking waterfalls. To take a panoramic capture of the Seljalandsfoss, a photographer must be prepared for the intense mist and huge dynamic range."

25 Stunning Photographs of the Natural World

A collection of winning photographs from the Nature’s Best Photography competition, on display now at the Museum of Natural History

“I’d rather gnaw a bean than be gnawed by continual fear.”

Scientists Investigate Whether the City Mouse Is Smarter Than the Country Mouse

Contrary to biologists' expectations, critters living in cities don't always have an adaptive edge over their rural counterparts

Five Unusual Ways Scientists Are Studying Climate Change

Fossilized urine, old naval logbooks and the recent speeds of satellites are among the unexpected records that track changing climate

What is it that makes honey such a special food?

The Science Behind Honey’s Eternal Shelf Life

A slew of factors—its acidity, its lack of water and the presence of hydrogen peroxide—work in perfect harmony, allowing the sticky treat to last forever

Optical art

These Patterns Move, But It’s All an Illusion

What happens when your eyes and brain don't agree?

Food residue encrusted on 6,000-year-old pottery fragments from Northern Europe, such as the one above, show traces of mustard seed, which was likely used as a seasoning for fish and meat.

Ancient Pottery Fragments Show That Prehistoric Humans Used Spices Too

Shards of 6,000-year-old cooking pots from northern Europe show traces of mustard seed, likely used as a seasoning for fish and meat

Sprites over Red Willow County, Nebraska, on August 12, 2013

Scientists Capture Rare Photographs of Red Lightning

Graduate student Jason Ahrns and colleagues hunt the skies for sprites—fleeting streaks and bursts of color that can appear above thunderstorms

McShea (in Posey Hollow): “Nobody has tried anything nearly as comprehensive.”

A Scientific Laboratory 170 Feet High in the Sky

Grand-scale ecology brings a Virginia forest under unprecedented scrutiny by Smithsonian researchers

Page 238 of 439