20190723T1449-28965-CNS-OBIT-CALLAHAN [web].jpg

Daniel Callahan, who pioneered the field of bioethics and co-founded the Hastings Center, a bioethics research institute, died July 16, 2019, two days before his 89th birthday. He is pictured in an undated photo. (CNS photo/courtesy The Hastings Center)
Daniel Callahan, who pioneered the field of bioethics and co-founded the Hastings Center, a bioethics research institute, died July 16, 2019, two days before his 89th birthday. He is pictured in an undated photo. (CNS photo/courtesy The Hastings Center)