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Science / Mind & Body

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

The Eurasian tree sparrow is one of 30 bird species in decline around Fukushima.

Birds Are in a Tailspin Four Years After Fukushima

Like the proverbial canary in a coalmine, avian abundances may paint a grim picture of the effects of nuclear disasters on wildlife

An X-ray of the knee bone.

We’re Not That Far From Being Able to Grow Human Bones in a Lab

The company EpiBone could be on the verge of a major breakthrough

Why Brain-to-Brain Communication Is No Longer Unthinkable

Exploring uncharted territory, neuroscientists are making strides with human subjects who can “talk” directly by using their minds

Human cortical neurons in the brain.

The Quest to Upload Your Mind Into the Digital Space

The idea is about as science fiction as it gets. But surprising progress in neuroscience has some entrepreneurs ready to press “send”

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