Everyone has a unique “fingerprint” of oral bacteria species, and new research shows that it correlates with genetic and ethnic factors.

Your Ethnicity Determines the Species of Bacteria That Live in Your Mouth

Everyone has a unique "fingerprint" of oral bacteria species, and new research shows that, in isolation, it can be used to predict your ethnicity

New research shows that eucalyptus trees can absorb gold particles in their roots and transport them up to their leaves, a finding that could be a boon for mining companies.

Gold Particles in Eucalyptus Trees Can Reveal Deposits Deep Underground

The plants can absorb gold particles in their roots and transport them up to their leaves--a finding that could be a boon for mining companies

Scientists have identified a milk protein called Tenascin C that binds to HIV (the virus is shown here in green) and prevents it from injecting its DNA into human immune system cells (shown in purple, with pseudopodia in pink).

Discovered: A Natural Protein in Breast Milk That Fights HIV

Scientists have identified a milk protein called Tenascin C that binds to HIV and prevents it from injecting its DNA into human cells

A new study shows that chimps make different warning calls based on the presence of other chimps, and keep sounding the alarm until their friends are safe.

Chimpanzees Intentionally Warn Their Friends About Danger

A new study shows that the apes make specific warning calls when near other chimps, and they keep sounding the alarm until their friends are safe

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The Science of Winning Leaps at the Calaveras County Frog Jumping Competition

Biologists visited the world-famous frog jubilee to study the amphibians' record-breaking jumps and the frog jockeys' expert techniques

Testing shows that a 46 million-year-old fossilized mosquito, found in Montana, contains the blood of an unknown ancient creature.

A Fossilized Blood-Engorged Mosquito Is Found For the First Time Ever

Testing shows that a 46 million-year-old fossilized mosquito, found by amateur fossil hunters in Montana, contains the blood of an unknown ancient creature

By altering levels of the naturally-occurring chemical kynurenic acid in the brain, scientists made marijuana’s active ingredient THC less pleasurable, leading monkeys to voluntarily consume 80 percent less of it.

Is This Chemical a Cure For Marijuana Addiction?

By altering levels of kynurenic acid in the brain, scientists made marijuana less pleasurable, leading monkeys to voluntarily consume 80 percent less of it

“Alexis”

This Photographer Shoots Portraits With a Thermal Camera

Artist Linda Alterwitz uses a camera that detects radiant heat, instead of light, uncovering hidden thermal signatures in everyday scenes

An artist’s depiction of the newly discovered ice-rich, rocky asteroid that was ripped apart by the distant white dwarf star 200 million years ago.

Scientists Just Discovered Water Near a Star 170 Light Years Away

The water was once bound as ice in a small, rocky planet or asteroid that was destroyed 200 million years ago

A new study predicts the year in which major world cities will experience a persistently abnormal climate for the first time.

A New Study Calculates the Year Climate Change Will Hit Your City

Persistently abnormal weather will arrive at different areas at different times, hitting the tropics soonest

5 Smithsonian Scientific Research Projects Shut Down by the Shutdown

The federal government shutdown has affected astronomy, paleontology fieldwork and research into animal behavior at the Smithsonian

New sensing technology reveals that the alpine swift, a small migratory bird, can remain aloft for more than 200 days without touching down.

This Bird Can Stay in Flight for Six Months Straight

A lightweight sensor attached to alpine swifts reveals that the small migratory birds can remain aloft for more than 200 days without touching down

Research in mice shows that heavy drinking triggers cellular changes that interfere with bone formation.

Why Binge Drinking Makes You More Likely to Break Your Bones

Research in mice shows that heavy drinking triggers cellular changes that interfere with bone formation

The highly anticipated acquisition of “Wankel’s Rex,” one the most complete T. rex specimens (metal cast shown above) in existence is delayed.

Due to the Shutdown, Arrival of the Natural History Museum’s T. Rex is Postponed Until Spring

The highly anticipated acquisition of one the most complete T. Rex specimens in existence is delayed

Are Diesel Exhaust Fumes to Blame for Honeybee Colony Collapse?

Tests show that diesel pollutants reduce bees' ability to smell flowers, potentially playing a role in the disappearance of the pollinating insects

A calcified flamingo, preserved by the highly basic waters of Tanzania’s Lake Natron and photographed by Nick Brandt

This Alkaline African Lake Turns Animals into Stone

Photographer Nick Brandt captures haunting images of calcified animals, preserved by the extreme waters of Tanzania's Lake Natron

New testing of treated wastewater from fracking shows that it contains high levels of radioactive radium, along with chloride and bromide.

Radioactive Wastewater From Fracking Is Found in a Pennsylvania Stream

New testing shows that high levels of radium are being released into the watershed that supplies Pittsburgh's drinking water

The accelerometer chip in iPhones can accurately detect seismic movement, and perhaps even provide a few crucial seconds of warning before the most energetic waves from an earthquake arrive.

Your Smartphone Could Someday Warn You That Earthquake Waves Are About to Hit

The accelerometer chip in iPhones can detect seismic movement and may even provide a few seconds of warning before the most violent shaking strikes

Staffers are trained to both prepare food and discuss political issues with customers.

Where War Is What's for Dinner

Pittsburgh’s Conflict Kitchen has a global menu, with dishes from countries that have diplomatic problems with the U.S.

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The Muppets Take the Smithsonian

Elmo, Fozzie Bear, the Count, Miss Piggy and 17 other Jim Henson puppets are coming to the American History Museum

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