Terry Gross

For 17 years, former Vice President Al Gore has been on the forefront of warning against global warming. But in his new documentary, The Inconvenient Truth, he says that he "failed to get the message out." He's now getting the message out with his documentary and new book of the same name. The Washington Post calls the book "downright chilling." The documentary has been critically acclaimed.

The new documentary Baghdad ER goes inside the 86th Combat Support Hospital in Iraq, the Army's premier medical facility in Iraq. Shot over two months in 2005, the film tells the stories of the hospital's doctors and wounded soldiers. The film debuted on HBO last week. Filmmakers Jon Alpert and Matthew O'Neill discuss their project with Terry Gross.

Country music singer and songwriter Willie Nelson has written a new book, The Tao of Willie: A Guide to the Happiness in Your Heart. Nelson has been performing for over 50 years. He's recorded 250 albums and appeared in 25 films. He's also the author of a number of books, including the best-sellers Willie and The Facts of Life and Other Dirty Jokes.