BROADCASTS.com

b'Avoiding meat and dairy is the single biggest way to reduce my impact on Earth. Research published in the journal Science shows even the very lowest impact meat and dairy products still cause much more environmental harm than the least sustainable vegetable and cereal growing. "A vegan diet is probably the single biggest way to reduce your impact on planet Earth, not just greenhouse gases, but global acidification, eutrophication, land use, and water use", says Joseph Poore, at the University of Oxford, UK.'