Peter Singer, Professor of Bioethics at Princeton University and Laureate Professor at the University of Melbourne, is one of the world’s most prominent ethicists. He is the author of Practical Ethics, Animal Liberation: A New Ethics for Our Treatment of Animals, and One World, The Ethics of What We Eat (with Jim Mason).

The Hidden Costs of Money
Paul Peters: It's a two-sides sword. The native-american practise of the yearly give-away is a great modus to combine "noblesse oblige" with a natural instinct and systemic asymmetries.
A New Year of Hope for Animals
Linda K. Lyons: Why is it a crime with a big fine and jail time in the U.S.A. (except for 2 states), that if a baby injured squirrel falls out of it's nest in a tree in your own back yard? I'm in Texas and have nurt…