" Ben West, one of the effective altruists mentioned in chapter 4, has shown that even if your goal were solely to slow down climate change by reducing greenhouse gas emissions, you could do that more effectively by donating to organizations that are encouraging people to go vegetarian or vegan than by donating to leading carbon-offsetting organizations. "

― Peter Singer , The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically