Billionaire Bill Gates is a vegetarian who has become a vocal advocate for a plant-based diet. Gates says a vegetarian diet is healthier and more environmentally friendly than a meat-based diet, and notes that the production of meat is responsible for over half the greenhouse gas emissions in the world. "[Moving toward a vegetarian diet is] important too in light of the environmental impacts of large-scale meat and dairy production, with livestock estimated to produce nearly 51% of the world’s greenhouse gases," Gates blogged on Mashable March 21. "The global population is on track to reach nine billion by 2050....
