Health

Nathan Wolfe travels to the viral hot spots of the world, where viruses first jump from animals to humans. The scientist spends his days tracking emerging infectious diseases before they turn into global pandemics.

Many people who live close to gas drilling sites complain of serious illnesses. But there are few concrete data to help explain why they're getting sick. Investigative reporter Abrahm Lustgarten says weak industry regulations also make it hard to establish a clear connection between gas drilling and health effects.

Jon Sarkin was working as a chiropractor when he suffered a massive stroke. Afterwards, he became an obsessive visual artist whose work was as fragmented and cluttered as his mind had become. Sarkin is the subject of a new book, Shadows Bright as Glass, by science writer Amy Nutt.

Composer Allen Shawn's twin sister, Mary, was diagnosed with autism and sent to an institution when they were 8 years old. He writes about his relationship with Mary — and his feelings of survivor's guilt — in a new memoir, Twin.

In 1972, Congress launched an experimental program that covered all medical expenses for anyone diagnosed with kidney failure. Investigative journalist Robin Fields shares her findings on the U.S. dialysis experiment -- and the lessons it holds for the future of health care reform.

Before it was called PTSD, soldiers traumatized in war were described as "shell-shocked" or "battle-fatigued." The new HBO documentary Wartorn, directed by Ellen Goosenberg Kent and Jon Alpert, chronicles the history of PTSD on the American battlefield from the Civil War to the present.

Neurologist Oliver Sacks is famous for his case studies of people with neurological disorders that cause unusual problems with perception. In The Mind's Eye, Sacks turns to himself, explaining how an eye tumor affected his vision and perception of the world.

There are 10 times more microbial cells on and in our bodies than there are human cells. And these bacteria aren't just there for the ride. Dr. Jeffrey Gordon explains how they contribute to the physiology of the human body and why they may hold the key to fighting some diseases.

In 2008, jazz pianist Fred Hersch slipped into an AIDS-related coma for more than two months. When he came out of the coma, he couldn't walk, eat or play piano. Hersch explains how he rebuilt himself after his illness and composed music for his latest album, Whirl.

When does collecting cross the line and become a disorder? And why do some people save every newspaper? Researchers Randy Frost and Gail Steketee examine compulsive hoarders in their new book, Stuff -- and explain what we know about the causes of and treatment for the compulsive disorder.