Sir Paul McCartney

Anyone who wants to help save the planet should turn vegetarian, according to Sir Paul McCartney. The former Beatle said the world's meat industry was one of the main contributors to global warming.

"Mother Nature's Son," Sir Paul McCartney, recently expressed his disappointment with environmental NGOs for not putting greater emphasis on reducing meat consumption -- along with driving less and replacing standard light bulbs with CFLs -- as ways to fight climate change.