Terry Gross

Neurological researcher Jill Bolte Taylor suffered a stroke 12 years ago. While the damage caused by a stroke is often devastating, Taylor was able to make a complete recovery after becoming her own experimental subject.

In July 2007, Brent Stirton shocked the world with a photo of a murdered mountain gorilla — one of seven killed, execution-style, in their jungle preserve. This year, Stirton returned to the Congo to help answer a question many had asked: Who killed the Virunga gorillas?

In the 1970s, George Carlin's seven dirty words routine was the center of a famous obscenity case. More recently, the comic was named the recipient of the Mark Twain Prize for American Humor. Carlin died of heart failure Sunday at the age of 71.