Terry Gross

Almost half of the fish we eat has been raised on farms -- and the genetic modification of fish is increasing. Paul Greenberg writes about changes in the fishing industry -- and what the future holds for our dinner tables -- in his new book, Four Fish: The Future of the Last Wild Food.

Fresh Air remembers the comic book writer with highlights from 2003 and 2005 interviews. Pekar, who died Monday, was the author of the series American Splendor, which captured the angst of a man struggling with the daily ups and downs of life.

If you've watched cartoons in the past few decades, you probably know Billy West's voice: He's played Philip J. Fry and Zapp Brannigan on Futurama, plus Bugs Bunny and Elmer Fudd in Space Jam (and more). West explains how he comes up with his voices -- and demonstrates a few of his favorites.