U.S.

Strong odors can be a problem for people with asthma. Even anticipating smells like chemicals or heavy perfumes can lead to an asthma attack. Some scientists think this may lead to new treatments.

The U.S. throws out 35 million tons of food each year. While many restaurants, supermarkets and processors are taking responsibility, many consumers aren't. An EPA pilot program aims to change that.

A new analysis by the Sunlight Foundation examines corporations that expend the most money in Washington on campaign contributions and lobbying. Defense contractors and finance giants lead the pack.

Meteorologists are annoyed by the hype around the phrase "polar vortex." This week's frigid snap, they say, was just a regular old cold front.

One-third of people have trouble downing pills, and many skip taking medications as a result. A researcher in Germany says that two techniques help. Really? We tested them ourselves to find out.

A patient's portion of a health care bill is the result of a complicated equation. But it's simple compared with the variety of deals insurers negotiate with hospitals and doctors.

The federal government is putting $100 million behind a simple idea: doubling the value of federal food benefits when people use them to buy fresh produce. This idea started small but became a hit.