A biochemist at Stanford University is taking an 18-month leave from his day job to change the way the world understands animal agriculture. Patrick O. Brown, a vegetarian for more than 30 years and a vegan for five, plans to put his scientific and research background to good use by helping inform people about the consequences of factory farming. Brown plans to work with food providers and chefs to create more vegetarian meal options for consumers. Recently, the dialogue over eliminating meat to save the planet has been appearing everywhere, from Oprah spotlighting her favorite vegan chef to Britain’s Lord Stern endorsing vegetarianism as the solution to healthier populations and a healthier planet.