Exercise may counteract Parkinson’s

(Matt McClain / FOR THE WASHINGTON POST)

Strenuous bicycling and other exercise seems to help people with Parkinson’s reduce their symptoms.

Diabetes has an image problem

Diabetes has an image problem

Diabetes is a serious disease that affects millions; society should not stigmatize its victims.

Cheap thermometers can be accurate

Cheap thermometers can be accurate

Consumer Reports tests infrared and stick fever thermometers for accuracy and ease of use.

Gestures can ease language learning

Gestures can ease language learning

Gestures make it easier for people to learn a language and could speed up foreign language learning.

Famed physicist is baffled by women

Famed physicist is baffled by women

Stephen Hawking talks about what mystifies him — and it’s not physics.

U.S. tightening fishing policy for 2012

U.S. tightening fishing policy for 2012

For the first time, the government will set catch limits for federally managed fisheries in the U.S.

‘Morning-after pill’ advocates take their case to Obama’s science adviser

‘Morning-after pill’ advocates take their case to Obama’s science adviser

Plan B’s advocates asked him the basis of the administration’s controversial decision last month.

Some doctors bill patients upfront

Some doctors bill patients upfront

Some doctors ask for a credit card to make an appointment and charge a cancellation fee upfront.

Sugar Ray Leonard discusses aging

Sugar Ray Leonard discusses aging

Former boxing champion Sugar Ray Leonard, now age 55, talks about how aging has affected him.

Scientists aren’t sold on doomsday

Scientists aren’t sold on doomsday

In light of the Mayan 2012 doomsday prediction, what do scientists say about the end of the world?

Nicotine patch may improve memory

Nicotine patch seems to boost long-term memory in older nonsmokers with mild cognitive impairment.

Inadequate sunlight can hinder sleep

Inadequate sunlight can hinder sleep

Not getting enough sunlight can hamper sleep; book offers checklists for hospital patients.

Another uphill battle on wind farms

Another uphill battle on wind farms

As Maryland lawmakers return, there is little evidence of support for Gov. Martin O’Malley’s vision.

The Checkup

 Jennifer LaRue Huget

Nicotine replacement therapy less effective than thought, study says

Nicotine replacement therapy (NRT) may work fine in randomized clinical trial settings, but not so much in the real world. That’s according to research published Monday afternoon in the journal Tobacco Control.

The Checkup

 Jennifer LaRue Huget

Recall: Excedrin, NoDoz, Bufferin and Gas-X products

Novartis has recalled some over-the-counter products because some packages may contain chipped or broken tablets or gelcaps — or the wrong tablets.

The Checkup

 Jennifer LaRue Huget

Experts: Preserve smallpox samples

The case against destroying the last remaining samples of live variola virus in the name of global security.

Health, Science & Environment Videos

Recalled Excedrin may contain powerful pain killers (00:43)

Recalled Excedrin may contain powerful pain killers (00:43)

The Food and Drug Administration is warning patients that about a potential mix-up between powerful prescription pain drugs and common over-the-counter medications like Excedrin and Gas-X made at a Novartis manufacturing plant. (Jan. 9)
Recalled Excedrin may contain powerful pain killers (00:43)

Recalled Excedrin may contain powerful pain killers (00:43)

The Food and Drug Administration is warning patients that about a potential mix-up between powerful prescription pain drugs and common over-the-counter medications like Excedrin and Gas-X made at a Novartis manufacturing plant. (Jan. 9)
Killer whales travel down Calif. coast

Killer whales travel down Calif. coast

A group of killer whales have been spotted much further south along the California coast than ever before. (Jan. 5)
297-pound python goes on diet

297-pound python goes on diet

In Australia, Betty the python goes in for a weight check after being put on a diet calling for fewer goats. Her keepers got concerned after she weighed in at 297 pounds. (Jan. 4)
London Zoo begins annual animal count

London Zoo begins annual animal count

Officials at London Zoo began conducting their annual stock-taking exercise on Wednesday, aiming to count every single mammal, bird and reptile on the site. The total number of animals counted last year was more than 18,000. (Jan. 4)
Baby pandas explore new home

Baby pandas explore new home

Twelve baby giant pandas are adjusting to living together in a group after recently leaving their mother at the Chengdu Research Base of Giant Panda Breeding in southwest China's Sichuan Province. The infant pandas are showing their playful side. (Jan. 4)
Scientists discover new underwater world

Scientists discover new underwater world

British scientists say they have discovered an exciting "lost world" full of previously undiscovered marine species on the seabed of the Southern Ocean, near Antarctica. (Jan. 4)
Sudden cold snap worries Florida farmers

Sudden cold snap worries Florida farmers

Strawberry growers, manatees and tropical fish farmers are all taking precautions against the cold in central Florida. (Jan. 4)
Stolen monkey returned to San Francisco Zoo

Stolen monkey returned to San Francisco Zoo

A beloved 17-year-old squirrel monkey known as "Banana Sam" was resting safely in the San Francisco Zoo on Sunday following what a spokesman called a 'trying few days.' (Jan. 2)
No snow has Iowa saving money

No snow has Iowa saving money

A lack of snow in Iowa has cities rejoicing, because they are saving big bucks when it comes to time, equipment and supplies like salt. But winter is not yet over. (Dec. 29)
Endangered rhinos on caught on camera

Endangered rhinos on caught on camera

Camera traps in an Indonesian park have captured images of 35 endangered Javan rhinos, five of them calves. Dozens of video cameras were placed earlier this year in the Ujung Kulon park, the animal's original habitat. (Dec. 29)
Twin polar bear cubs ready for debut

Twin polar bear cubs ready for debut

Twin polar bear cubs are set to meet the public for the first time during the coming New Year's holiday at the Dalian Laohutan Pole Aquarium in northeast China's Liaoning Province. (Dec. 29)
Twin polar bear cubs to make debut in China

Twin polar bear cubs to make debut in China

Twin polar bear cubs are expected to make their debut in the New Year at an aquarium in China. (Dec. 29)

Urban Jungle

Wild onions

Wild onions

Pungent edible clumps are easy to spot in winter lawns.

Medical Mysteries

Medical Mystery: Failing eyesight

Medical Mystery: Failing eyesight

A woman’s work-up for laser eye surgery revealed a serious problem she didn’t know she had.

Read more Medical Mysteries

How & Why

Traffic science battles heavy flows

Traffic science battles heavy flows

Traffic science struggles to keep cars flowing on highways in D.C. and elsewhere.

Special Reports

Obesity in America 2010

One-third of U.S. children are overweight, leaving the health and productivity of an entire generation at risk.

AIDS/HIV

Virus that causes AIDS passes between U.S. and Mexico.

Inside Your Body

Find graphics, galleries and more that explain what’s happening in your body.