Why a pet’s death can hurt so much

(Photo by Rebekah Yonan)

How could a dog’s death hurt as much as a relative’s? As the sadness lingers, part of Joe Yonan’s grieving process has been to try to understand the differences.

Give lesser-known produce a try

Give lesser-known produce a try

Eating enough fruit and vegetables can be hard. Trying unusual options like kohlrabi and jicama may help.

Stomach surgery more effective than medicine for diabetes, studies find

Stomach surgery more effective than medicine for diabetes, studies find

Surgeries can help reverse Type 2 diabetes, reducing or eliminating reliance on insulin, other medicines.

The individual mandate’s GOP history

The individual mandate’s GOP history

In curious twist in health-care debate, legal case against Obama’s signature law focuses on provision that originated in Republican circles.

Headache can signal a major problem

Headache can signal a major problem

Consumer Reports: A headache is usually a minor ailment, but can, in rare cases, signal a tumor or stroke.

Consumers paid to pick cheaper care

Consumers paid to pick cheaper care

Some insurers are offering cash bonuses to consumers who opt for cheaper health-care providers.

Study credits D.C. female condom program with reducing HIV infections

Study credits D.C. female condom program with reducing HIV infections

Program’s prevention of infections in its first year likely saved over $8 million in future HIV-related costs.

Workout video has varied challenges

Workout video has varied challenges

Jari Love’s workout video and Get Ripped program shows exercises that you’ll feel the next morning.

Mercury finally gets its close-up

Mercury finally gets its close-up

Mostly ignored since the 1970s, our solar system’s smallest planet is getting attention from a NASA probe.

EPA to impose first greenhouse gas emission limits on power plants

EPA to impose first greenhouse gas emission limits on power plants

The move could end construction of new conventional coal-fired facilities in the United States.

Filmmaker James Cameron makes
solo visit to the bottom of the ocean

Filmmaker James Cameron makes <br> solo visit to the bottom of the ocean

Nine hours after completing a historic dive, Cameron described his “very surreal day.”

Middle age is a boon to humanity

Middle age is a boon to humanity

People in their 50s and 60s are skilled, experienced super-providers essential to success of our species.

TV documentary visits poles in winter

TV documentary visits poles in winter

Miniseries looks at how polar bears, penguins and other life survive in the coldest region of the world.

Ibuprofen may ease altitude sickness

Ibuprofen may ease altitude sickness

Study finds that adults traveling at high elevations reported less severe symptoms if taking ibuprofen.

Can captivity help polar bears survive?

Can captivity help polar bears survive?

Activists, zoo officials, lawmakers and scientists have come up with a proposal to help the bears survive the assault of global warming.

The Checkup

Jennifer LaRue Huget

New cancer stats mostly encouraging

The incidence of many forms of cancer decreased between 1999 and 2008, data released Wednesday show.

The Checkup

Jennifer LaRue Huget

Being bilingual may delay dementia

That finding is reported in a paper in the April issue of Trends in Cognitive Sciences.

The Checkup

Sit at your peril

It’s not news that rump-resting is bad for your health, of course. But a big new study out of Australia puts some better numbers on how too much sitting increases the risk of death.

Health, Science & Environment Videos

Urban Jungle

The extra-early bird

The extra-early bird

Urban American robins start singing well before their county cousins.

Medical Mysteries

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

WASHINGTON - NOVEMBER 22: Traffic flows over the American Legion Bridge along I-495, the Capitol Beltway, on the day before the Thanksgiving holiday November 22, 2006 between Virginia and Maryland. The federal National Transportation and Safety Board said that 83% of all holiday travelers will go by car, van or bus this year. (Photo by Chip Somodevilla/Getty Images)

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.