Dr R.K. Pachauri is head of the Intergovernmental Panel on Climate Change, co-recipient of the 2007 Nobel Peace Prize. He is also a vegetarian who urges meatarians to go meatless at least one day a week. His blog features videos of his speeches, as well as interviews and articles: www.rkpachauri.org

Here’s one example: www.rkpachauri.org/pdf/London08.pdf