When the next natural disaster strikes, Will MacAskill does not want you to donate to the relief effort. And if a relative dies from a disease, he doesn’t think you should try and raise money for that cause. Rather, he wants you to focus on the "ongoing disasters" that sicken, maim and kill thousands of people every day, mostly in the developing world.

An associate professor in philosophy at Oxford University, MacAskill has cofounded two nonprofits. His new book "Doing Good Better" explores the ideas of Effective Altruism in depth.