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VIDEO: Functional Liver Tissue Can Now Be Grown From Stem Cells

By mixing different types of stem cells in petri dishes, researchers created liver “buds” that effectively filtered blood when implanted in mice

The habitual use of antibiotics at industrial farming operations to promote growth can lead to the development of bacteria resistant to the drugs.

Factory Farms May Be Ground-Zero For Drug Resistant Staph Bacteria

Staph microbes with resistance to common treatments are much more common in industrial farms than antibiotic-free operations

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Why Do We Yawn and Why Is It Contagious?

Pinpointing exactly why we yawn is a tough task, but the latest research suggests that our sleepy sighs help to regulate the temperature of our brains

Our uncommon shoulder flexibility allows us to throw extremely fast, as compared to other primates—a trait we likely evolved two million years ago to aid with hunting.

How the Human Body Evolved to Throw Fastballs

Our shoulder flexibility allows us to hurl things at high speeds compared to other primates—a trait we likely evolved for hunting two million years ago

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Why We Should Study Cancer Like We Study Ecosystems

Like pine beetles sickening a forest as they spread, cancer can be seen as a disruption in the balance of a complex microenvironment in the human body

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This Castle’s Toilet Still Holds Parasites From Crusaders’ Feces

The presence of whipworm and roundworm eggs suggest that crusaders were especially predisposed to death by malnutrition

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Cracking the Code of the Human Genome

Scientists Sequence DNA of Bacteria Responsible for Medieval Leprosy

Genetic information gathered from centuries-old exhumed bones reveals that the infection hasn’t changed much in the past 1,000 years

Languages that evolve at high elevations are more likely to include a sound that’s easier to make when the air is thinner, new research shows.

Do Geography and Altitude Shape the Sounds of a Language?

Languages that evolve at high elevations are more likely to include a sound that’s easier to make when the air is thinner, new research shows

Emerging research indicates that low doses of the active chemical psilocybin can have positive psychiatric effects.

Could “Magic” Mushrooms Be Used to Treat Anxiety and Depression?

Emerging research indicates that low doses of the active chemical psilocybin, found in the fungi, can have positive psychiatric effects

A Neanderthal rib bone was discovered to have a lesion associated with a tumor (top specimen). The missing bone tissue is starkly apparent compared to a normal Neanderthal rib shown below.

Evidence for the Oldest Ever Bone Tumor Was Just Found in a Neanderthal Fossil

A 120,000-year-old rib bone, originally found in Croatia, shows that tumors aren’t always caused by exposure to pollution

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VIDEO: This Helicopter is Controlled Entirely By A Person’s Thoughts

A new device can read your brain patterns to steer a toy helicopter—the mere thought of clenching your right fist veers the chopper right

A neurotransmitter called Nppb, we now know, plays a vital role in the sensation of an itch—and removing it can prevent itchiness entirely.

Discovered: The Molecule Responsible for Itchiness

A neurotransmitter called Nppb, we now know, plays a vital role in the sensation of an itch—and removing it can prevent itchiness entirely

Engineers and doctors 3D printed this custom-made splint that currently holds open the airway of a six-week-old infant and will be gradually absorbed into the body over time.

Doctors Use a Dissolvable 3D-Printed Tracheal Splint to Save a

An infant’s collapsing airway now has a device holding it open; as his tissue strengthens, the splint will be absorbed into his body

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Solving an Alligator Mystery May Help Humans Regrow Lost Teeth

A gator can replace all of its teeth up to 50 times—learning what triggers these new teeth to grow may someday keep us from needing dentures

New research shows our brains have a specialized system to anticipate the location of moving objects, located in V5 region of the visual cortex.

How the Human Brain Tracks a 100-mph Fastball

Research shows that our brains have a specialized system to anticipate the location of moving objects, located in the visual cortex

Recent testing shows that, contrary to prior findings, new plastic helmets reduce the risk of concussions by 45 to 96 percent.

Are Modern Football Helmets Any Safer than Old-School Leather Ones?

Recent testing shows that, contrary to prior findings, new plastic helmets reduce the risk of concussions by 45 to 96 percent

The creamy sticks of color seen here are just the latest in a long history of lipsticks—historical records suggest that humans have been artificially coloring their lips since 4,000 B.C.

Heavy Metals, Insects and Other Weird Things Found in Lipstick Through Time

From seaweed and beetles to lead and synthetic chemicals, lipstick has seen its share of strange—and dangerous—components

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

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Cops Could Soon Use Breathalyzers to Test for Illegal Drugs

Swedish researchers are developing a system that tests for 12 different drugs on your breath, including cocaine, marijuana and amphetamines

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Why Women Like Deep Voices and Men Prefer High Ones

We find different pitches attractive because of the body size they signal—and a touch of breathiness is crucial to take the edge off deep voices in men

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