In addition to the health benefits and ethical considerations, a vegetarian lifestyle can cut carbon emissions considerably. In fact, according to a 2006 United Nations report, cattle farming generates more greenhouse gasses than transportation.
In a recent interview with PETA (People for the Ethical Treatment of Animals), McCartney pointed to the meat industry as a leading contributor to climate change.
"The biggest change anyone could make in their own lifestyle would be to become vegetarian. I would urge everyone to think about taking this simple step to help our precious environment and save it for the children of the future," said Sir Paul.
"It's very surprising that most major environmental organizations are leaving the option of going vegetarian off their lists of top ways to curtail global warming."
Paul began his eco-friendly lifestyle with his first wife Linda. The couple raised their children as vegetarians, and designer daughter Stella McCartney carries on the tradition in her clothing and beauty lines.
When Paul married now ex-wife Heather Mills after Linda's death he continued the lifestyle with her and their daughter Beatrice.
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