Former Beatle, Paul McCartney, is taking his Meat-Free Monday campaign to the European Parliament, saying the power to halt global warming lies as much with individuals as with their governments.

McCartney is a vocal vegetarian. He and his deceased wife, Linda, created a line of vegetarian food products under the Linda McCartney brand. McCartney has long supported animal rights efforts and the People for the Ethical Treatment of Animals and other such groups often have booths set up at concert venues when he performs.

On this effort, McCartney met in Brussels with Rajendra Pachauri, head of the United Nation's global climate change panel, and praised the virtue of skipping meat one day a week for the sake of the environment.

McCartney argues that food production— from farm to fork — accounts for 20 percent to 30 percent of global green house gas emissions. He contends that livestock production is responsible for around half of these emissions.

Of course other entities disagree and cite significantly less impact from agriculture, including livestock. In fact, agriculture can play a role in mitigating greenhouse gas emissions through a variety of on-farm production practices.
Pachauri lauded McCartney's initiative, saying it "makes the tasks of governments so much easier."

The Associated Press contributed to this article.