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Science / Mind & Body

Ask Smithsonian: Why Do We Love Junk Food So Much?

The jury is still out, but some are suggesting that sodas, chips and fries trick the brain into thinking no calories were consumed

The patient, in a rare moment of calm.

Cats Get Breast Cancer Too, and There’s a Lot We Can Learn From It

Understanding aggressive tumors in pets may lead to better treatments for the nastiest forms of the disease in people

Members of the Xhosa tribe, like the young initiates seen here in Khayelitsha, are among the South African groups that practice ritual circumcision. The affiliation of the young man who received a transplant is not known.

Trending Today

The Trickiest Part of a Penis Transplant? Finding a Donor

The doctors who announced the first successful procedure last week had a particularly difficult time finding willing organ donors

New Research

Politicians Are More Persuasive During Interactive Town Hall Meetings

When given a chance at direct persuasion, most politicians are surprisingly good at changing our minds

An ecosystem of bacteria lives in our intestines and produces gases. Detecting these gases in real-time could provide insight into their relationship with different illnesses.

New Research

Fecal Fermentation and Electronic Pills May Help Decipher Gut Gases

Some intestinal gases have been linked with diseases such as irritable bowel syndrome and colon cancer, so tracking them might explain the connection

Scanning electron micrograph of a greenfly eye. Greenflies (aphid) have a pair of compound eyes. The small protrusion coming from the side of the eye is called an ocular tubercle, and it is made up of three lenses.

Art Meets Science

A Goat’s Stomach Never Looked So Good

Eleven venues worldwide will exhibit these 20 striking micrographs, MRI scans and illustrations—all winners of this year’s Wellcome Image Awards

Use Virtual Reality to Eliminate That Pain in Your Neck

Altering visual perceptions can trick the brains of chronic sufferers so they can enjoy pain-free motion

Snack first, then try on that cardigan.

Hunger Makes You Buy More Stuff, Even If It’s Not Food

Whether you’re shopping at the mall or online, having the munchies will compel you to purchase extraneous things

Midnight Snacking Is Bad for Your Brain

Experiments in mice show that misaligned eating patterns can mess with the brain’s ability to form memories and learn new tasks

As a kid, you may remember getting your first glimpse of paramecium in pond water or the cell structure of an onion by peering through a microscope.

Ultra-Cheap Microscopes Could Save Millions of Lives

Researchers are designing portable microscopes that cost just a few dollars to make

Imagining the future of artificial hearts.

Help for the Brokenhearted: Wearable, Biosynthetic and ‘Beatless’ Artificial Hearts

Cow-machine hybrids and continuous-flow technologies are helping people survive devastating heart failure

Adrenaline crystals (polarized light micrographs). Adrenaline, also called epinephrine, is normally present in blood in small quantities. It is a hormone produced in the adrenal glands above the kidneys. The glands are controlled by the hypothalamus, the part of the brain responsible for instinct and emotion. In times of stress, more adrenaline is secreted into the bloodstream. It widens the airways of the lungs and constricts small blood vessels. This makes the muscles work harder and produces a "fight or flight" response. Adrenaline used as a drug expands the bronchioles in acute asthma attacks and stimulates the heart in cases of anaphylactic shock.

Art Meets Science

Blood Clots, Liver Cells and Bird Flu Are Surprisingly Beautiful Under a Microscope

The brightly-colored micrographs and scans in a new book, Science is Beautiful, answer big questions about the human body

A former bombe operator shows the back of a drum from the decryption machine at Bletchley Park.

Brains Make Decisions the Way Alan Turing Cracked Codes

A mathematical tool developed during World War II operates in a similar way to brains weighing the reliability of information

How Long Will You Live? Ask Your Friends

A medical personality quiz started in the 1930s shows how your best pals may know more about your health than you do

Your big toe is an example of how "boundary conditions" can affect the curvature of a nail.

Toenail Physics Explains Why Big Toes Are More Likely to Suffer Ingrown Nails

The delicate balancing act between stresses of growth and adhesion can help demystify some painful nail disorders

The 2014-15 flu vaccine is here, but the CDC warns that it's not as effective as hoped.

A Universal Flu Vaccine May Be On the Horizon

Choosing the viral targets for the seasonal flu vaccine is a gamble. Sometimes, like this year, the flu wins

Ask Smithsonian: Five False ‘Facts’ About the Human Body

You can’t always trust what your mother told you

Social media may be more relaxing than anticipated.

Social Media Is Not Making You a Ball of Stress

But perhaps unsurprisingly, Facebook and Twitter can cause stress to spread when bad things happen to friends and family

Researchers exhumed the mummy of Cangrande della Scala in 2004 to perform a modern autopsy on the famous Italian autocrat.

Poison Hath Been This Italian Mummy’s Untimely End

A lethal helping of foxglove seems to have triggered the downfall of a warlord of Verona

Resolve not to have a grocery store overload.

Many Households Buy More Food in January Than During the Holidays

New Year’s resolutions to eat better lead many people to buy health food in addition to a continued junk food glut

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