Paul McCartney And Yoko Ono Push 'Meat-Free Mondays' (SLIDESHOW)

AFP: Beatles legend and famous vegetarian Paul McCartney was joined by John Lennon's widow Yoko Ono Monday to launch an appeal for "meat-free Mondays."

McCartney said going vegetarian, even for just one day a week, was good for the environment because of research suggesting it cuts greenhouse gas emissions from the world's livestock population.

Some of the folks who came out to support Meat-Free Mondays: