A trident lined with shark teeth, used in the study.

19th Century Shark Tooth Weapons Reveal A Reef’s Missing Shark Species

Lashed to swords and spears from the Pacific's Gilbert Islands are teeth from two shark species that were never known to have swam in the area

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What Makes Rain Smell So Good?

A mixture of plant oils, bacterial spores and ozone is responsible for the powerful scent of fresh rain

Using an equation based off animal territories, an anthropologist at UCLA was able to draw theoretical borders between gang turf in Los Angeles.

What Can Bees Teach Us About Gang Warfare?

In Los Angeles, an anthropologist is using equations to teach police about how street gangs operate

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The Greening of the Arctic is Underway

As the climate changes, trees and shrubs are poised to take over tundra and alter the Arctic's ecosystems

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Research Shows That True Fame Lasts Longer Than 15 Minutes

Contrary to the cliché, an analysis of news articles over the years shows that celebrity has lasting power

The first-ever sequencing of the produce microbiome reveals that grapes, peaches and sprouts host the largest diversity of harmless bacteria.

A Survey of the 161 Bacterial Families That Live on Your Fruits and Veggies

The first-ever sequencing of the "produce microbiome" reveals that grapes, peaches and sprouts host the largest diversity of harmless bacteria

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Warning: Living Alone May Be Hazardous to Your Health

Being socially isolated increases your chance of death—but not because you're feeling depressed over being lonely

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Video: This Lizard-Inspired Robot Can Scamper Across Sand

It's a product of the emerging field of terradynamics, which studies the movement of vehicles across shifting surfaces

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Video: This Mini 3D Display Could Show up on Next Generation Smartphones

The new technology can be packed into a tiny space, requires no glasses and can project images and video in full color

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UPDATED: Has the Voyager 1 Probe Finally Left the Solar System?

New data indicate the spacecraft, launched in 1977, has neared interstellar space, more than 11 billion miles away from the Sun

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Prehistoric Human Skull Shows Signs of Inbreeding

A 100,000-year-old skull has a hole that reflects genetic mutations from inbreeding—likely a common behavior for our ancestors

Roosters have an internal circadian rhythm, which keeps them crowing on schedule even when the lights are turned off.

How Do Roosters Know When to Crow?

Their internal circadian rhythms keep them crowing on schedule, even when the lights are turned off

At the bottom of the Mariana Trench, nearly eight miles below the ocean’s surface, abundant communities of bacteria thrive.

Nearly 8 Miles Down, Bacteria Thrive in the Oceans’ Deepest Trench

The Mariana Trench may serve as a seafloor nutrient trap, supporting remarkable numbers of microorganisms

An intriguing new study suggests that infants dislike those who are different from themselves.

Are Babies Bigoted?

An intriguing study involving puppet shows suggests that infants dislike those who are different from themselves

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Science Shows Why You’re Smarter Than a Neanderthal

Neanderthal brains had more capacity devoted to vision and body control, with less left over for social interactions and complex cognition

Your publicly available “likes” can tell others a lot you wouldn’t expect—including your political views, sexual orientation and religion.

How a Computer Program Can Learn All About You From Just Your Facebook Likes

Your publicly available "likes" can tell others a lot you wouldn't expect—including your political views, sexual orientation and religion

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What Happened the Last Time the Climate Changed

Smithsonian scientists investigate a sudden warming of the Earth 55 million years ago to understand how climate change will affect future ecosystems

Caffiene, naturally present in some plant nectars, was shown to improve honeybees’ long-term memory in a new study.

Even Bees Get a Buzz When They Drink Caffeine

The drug, naturally present in coffee and citrus plant nectars, is shown to improve honeybees' long-term memory

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This 33,000-Year-Old Skull Belonged to One of the World’s First Dogs

A new DNA analysis confirms that an ancient skull found in a Siberian cave was an early ancestor of man's best friend

The research drew upon theromgraphic images of the penguins collected in the wild.

How Emperor Penguins Survive Antarctica’s Subzero Cold

The birds' plumage is even colder than the surrounding air, paradoxically insulating them from heat loss

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