Shuttle completes final landing

(John Raoux / AP)

The 135th and final flight of America’s space shuttle fleet ended safely early Thursday, completing the three-decade lifetime of a technologically remarkable and versatile spacecraft.

Birth control proposed for most plans

Birth control proposed for most plans

Virtually all health insurance plans could soon be required to offer free coverage of prescription birth control and other services.

Facebook gives clues to personality

Facebook gives clues to personality

Can social media profiles predict human behavior?

School clinics get a shot of aid

School clinics get a shot of aid

Health care overhaul gives $200 million to school clinics in needy areas.

Chessie the manatee visits Md. again

Chessie the manatee visits Md. again

Boaters at a Calvert County marina spot a long-lost friend: the manatee who for a time called the Chesapeake Bay home.

Loss of predators breaks the chain

Loss of predators breaks the chain

The decline of large predators is disrupting food chains and aiding the spread of disease.

Medicare leaves many with big bills

Medicare leaves many with big bills

Medicare doesn’t cover many health care expenses for low-income seniors.

Robotic surgery grows more popular

Robotic surgery grows more popular

Robotic surgery has grown widespread, but some surgeons question how it compares to the alternatives.

Artificial reefs raise questions

Artificial reefs raise questions

Some question whether projects to create artificial reefs do more harm than good for the environment.

Top baboons excel in sex and stress

Top baboons excel in sex and stress

Study finds high levels of sex and stress hormones in alpha male baboons.

NASA’s Dawn probe arrives at ‘mini moon’

NASA’s Dawn probe arrives at ‘mini moon’

After spiraling outward from Earth for four years, NASA’s Dawn probe is set to take a year-long look at an ancient “mini moon.”

The Checkup

 Jennifer LaRue Huget

FDA seeks input on medical apps

When it comes to health-related apps accuracy and authority are essential. And the stakes can be high, too.

The Checkup

 Jennifer LaRue Huget

Are MS drugs cost-effective?

A new analysis of disease-modifying therapies for treating multiple sclerosis finds that those drugs provide only modest benefits at great expense -- at least in the United States.

The Checkup

 Jennifer LaRue Huget

How accurate are restaurant calorie listings?

Calorie labeling on restaurant menus -- as required of many restaurants under the federal Patient Protection and Affordable Care Act of 2010 -- can only help people manage their weight if those listings are correct. Research published today in the Journal of the American Medical Association has concluded that, by and large, restaurants are providing fairly accurate information.

Health, Science & Environment Videos

After shuttle landing, NASA lays off thousands

Video: After shuttle landing, NASA lays off thousands

One day after the space shuttle Atlantis landed safely and closed NASA's chapter on the shuttle program, the space agency began laying off thousands of workers. (July 22)
After shuttle landing, NASA lays off thousands

After shuttle landing, NASA lays off thousands

One day after the space shuttle Atlantis landed safely and closed NASA's chapter on the shuttle program, the space agency began laying off thousands of workers. (July 22)
Keeping polar bears cool in the heat

Keeping polar bears cool in the heat

Animals at the Philadelphia zoo are spending time in the water and in the shade as they try to stay cool during the heat wave. A zoo official explains how the animals are beating the extreme heat. (July 22)
Atlantis home, NASA layoffs begin

Atlantis home, NASA layoffs begin

The safe return home of Atlantis marks the official end of the shuttle program, as well as the start of thousands of layoffs for NASA employees. (July 21)
Warning signs, tips for extreme heat

Warning signs, tips for extreme heat

Medical experts give advice about coping with extreme heat that is scorching the eastern United States and symptoms to look for of heat exhaustion. (July 21)
Giant tissue paper rolls spilled in Idaho river

Giant tissue paper rolls spilled in Idaho river

A driver carrying a load of 64,000 pounds of tissue paper lost control of his vehicle, overturned and slid into the Lochsa River in Idaho. (July 21)
Atlantis lands at Kennedy Space Center

Atlantis lands at Kennedy Space Center

The last space shuttle and its four crew members landed safely at Kennedy Space Center on Friday morning. (July 21)
First lady teams up with national grocers

First lady teams up with national grocers

First lady Michelle Obama announced on Wednesday a campaign with Wal-Mart, Walgreens and SuperValu to bring fresh fruits and vegetables to impoverished areas with little to no access to healthy foods. (July 20)
Searing temps scorch eastern U.S.

Searing temps scorch eastern U.S.

The National Weather Service say cooler air should begin moving into the Plains states this weekend, providing relief to millions of Americans that meteorologists say are living under 'exceptional' temperatures. (July 20)
Atlantis crew set to return to Earth

Atlantis crew set to return to Earth

The Atlantis shuttle crew has completed their mission and are scheduled to return to Earth Thursday morning. (July 20)
Advisory group: Birth control should be free

Advisory group: Birth control should be free

A medical advisory group recommended that insurance coverage pay for birth control as part of the nation's health care overhaul. (July 20)
Midwest heat wave expected to persist this week

Midwest heat wave expected to persist this week

Midwest residents are suffering through a brutal heat wave that has enveloped most of middle America and is slowly spreading eastward. The temperatures are expected to stay high through at least the end of the week. (July 19)
Horse who survived barn fire offers hope to humans

Horse who survived barn fire offers hope to humans

A horse that suffered burns over two-thirds of her body in a barn fire in eastern Pennsylvania has largely recovered. Now the animal's owner hopes "Suki" can become a therapy animal for human burn victims. (July 18)

Urban Jungle

Summer’s wild oats, winter’s warm mush

Summer’s wild oats, winter’s warm mush

Wood oats dangle their flower spikelets all summer long.

Medical Mysteries

Severe itching was a medical mystery

Severe itching was a medical mystery

Photographer Carrell Grigsby wondered if her job was making her sick. It wasn’t.

Read more Medical Mysteries

How & Why

Why some bugs look like bling

Why some bugs look like bling

OK, they can be pests, but some bugs have amazing iridescence. It all has to do with how their exoskeletons transform visible light.

Special Reports

Obesity in America 2010

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

AIDS/HIV

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

Inside Your Body

Inside Your Body

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