Peter Yarrow, the singer-songwriter, activist and founding member of the folk group Peter, Paul and Mary, died Tuesday, his representative confirms.He was 86. Yarrow died at his home in New York ...

Through clear-eyed arguments and ceaseless advocacy, Australian philosopher Peter Singer has revolutionized modern philanthropy—twice. His 1972 essay “Famine, Affluence, and Morality” argued ...

Peter Singer wants us to reconsider serving turkey on Thanksgiving. He has his reasons. He has lots of them, all tucked into a slim volume, “Consider the Turkey,” which the 78-year-old ...