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Science / Mind & Body

Roses mark a window filled with bullet holes after a shooting spree in Denmark.

New Research

Shootings and Mass Murders Seem to Be Contagious

Data spanning decades shows how high-profile events can cause outbreaks of similar killings that mirror the spread of disease

The U.S. Supreme Court voted 5-4 to legalize marriage equality nationwide on June 26.

Can Science Help People Unlearn Their Unconscious Biases?

Social events, sleep training and even meditation may offer ways for people to erase biases they probably didn’t know they held

For the first time, Florian Engert and his team mapped every firing neuron in a living animal.

How a Transparent Fish May Help Decode the Brain

An outspoken Harvard neuroscientist is tackling the wondrous challenge of understanding the workings of the brain

Skin bacteria may have lured in this hungry Aedes aegypti mosquito.

New Research

To Stop Mosquito Bites, Silence Your Skin’s Bacteria

Texas scientists tricked mosquitoes into skipping a blood meal by modifying the way bacteria talk to each other

People Get Seasonal Depression in the Summer, Too

Millions suffer from SAD in summer as well as winter, and evidence hints that birth season plays a role in who develops the disorder

New Research

Kangaroos Are Lefties, and That Can Teach Us About Human Handedness

The discovery strengthens the case that upright posture drove the evolution of dominant hands in humans

Eight New Things Science Says About Being a Dad

They’re still not very good at cooing to toddlers, and their testosterone levels start to drop even before a baby is born

A ward in Carver Hospital in Washington, D.C., during the Civil War. One key innovation during this period was the division of hospitals into wards based on disease.

Six Ways the Civil War Changed American Medicine

150 years ago, the historic conflict forced doctors to get creative and to reframe the way they thought about medicine

A village nestled inside the Brazilian Amazon.

Anthropocene

Protecting Land in Brazil Reduces Malaria and Other Diseases

Areas under strict protection see the most benefit in shielding people from illness and infection

A prison cemetery in Huntsville, Texas, where many executed inmates have been buried.

Support for the Death Penalty May Be Linked to Belief in Pure Evil

People who think evil exists in the world are more likely to demonize criminals, regardless of their character traits

The rolled electronic mesh is injected through a glass needle into a water-based solution.

New Research

A Flexible Circuit Has Been Injected Into Living Brains

Tested on mice, the rolled mesh fits inside a syringe and unfurls to monitor brain activity

Ask Smithsonian 2017

Does Dieting Actually Make Your Stomach Shrink?

Not exactly, says science—stretchiness and psychology seem to play bigger roles than size in determining how much a person can eat

The nose knows.

New Research

Mouse Noses Can Bypass the Brain to Make Females Blind to Males

Hormones direct the nose to signal when potential mates are about—and when to erase their scent

Ask Smithsonian: What Happens When You Get a Concussion?

It’s scary what we don’t know about the lasting effects after a knock to the noggin

Why Do Humans Have Chins?

The most distinctive human feature might be that bony protrusion that made Jay Leno famous

A person looks at profile photos on the messaging app Momo in Shanghai.

New Research

Your Online Dating Profile Picture Affects Whether People Trust You

Attractiveness is linked to trust, but the responses are very different between men and women

In a recent ad campaign, portraits of litterers made from DNA taken from tossed cigarettes, coffee cups and condoms were posted in public places around Hong Kong.

DNA Testing Could Identify Litterbugs and Dog Poop Miscreants

Anonymous crimes may not be quite so anonymous anymore

New Research

Veggie Power? Artificial Muscles Made From Blinged-Out Onions

Turning root vegetables into working muscles requires gold, electricity and imagination

A blood-sucker creeping around on a potential victim's pristine white sheets.

Cool Finds

How Our Modern Lives Became Infested With Bed Bugs

After being bitten by the tiny pests, author Brooke Borel set out to learn all she could about her blood-sucking foes

Humans traveling to Mars may need extra shielding for their brains.

New Research

A Trip to Mars Could Give You Brain Damage

Exposure to cosmic rays may cause defects that would make astronauts lose their curiosity during a mission

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