Cancer biopsies traditionally require surgery to remove a piece of tumor. But researchers hope to eventually be able to use liquid biopsies for cancer screening and early diagnosis.

Experts discuss why pet obesity is a problem and ways pet owners can keep their furry friends healthy.

A surprisingly large number of people may become agitated or even enraged when they hear "mouth sounds" such as chewing or slurping, sniffling, or crunching of paper. This disorder, misophonia, is largely unknown, but researchers believe audio processing of these sounds is misrouted to rage centers in the brain. Experts and a sufferer discuss the syndrome.

Everyone deals with grief at one time or another. An expert discusses how it's experienced by most people, and a writer/illustrator discusses his experience dealing with his spouse's sudden death.

Researchers are learning that tears shed for different reasons are chemically different. Experts discuss why it's good for people to cry.

Consumers who purchase medicines online are taking a big risk-experts say 97% of online "pharmacies" are rogue sites operating illegally. Experts discuss how consumers can buy safely.

Multitasking seems like a necessity for most people, and most of us think it improves our efficiency. However, studies show that only a tiny proportion of people can juggle tasks well. Researchers discuss why our brains can't do two things at once, and why "supertaskers" may be different.

Few people are aware that the vehicle occupant most likely to be hurt in a crash is the one in the front passenger seat. Experts discuss how car occupants can protect themselves from injury.

An award winning science writer discusses her experience observing how medical professionals and patients differ in their acceptance of impending death, and what families need to know to navigate the end of life toward a "good death."

Experts discuss the right and wrong ways to help children cope with parental suicide.