Sir Paul McCartney has followed in the footsteps of his estranged wife Heather Mills by urging the world to go vegetarian. The Beatles legend has launched a campaign to eradicate meat-eaters through British newspaper the Sunday Times. MCCartney cited a United Nations report which claimed the biggest things any individual can do for the plant is to become a vegetarian. He says, "What's compelling is this report should now encourage everyone to do their bit." Last month (Nov07), Mills urged U.K residents to drink rat's milk after claiming 80 per cent of global warming comes from livestock.