Peter Singer is a professor of bioethics at Princeton University. His 1975 book Animal Liberation was a touchstone for the animal rights movement. A selection of his many books include: Practical Ethics, How Are We To Live? Ethics in an Age of Self-Interest, One World: The Ethics of Globalization, The Ethics of What We Eat: Why Food Choice Matters, and The President of Good and Evil: Questioning The Ethics of George W. Bush. Singer's most recent book, The Life You Can Save: Acting Now to End World Poverty, is now available.