Life is full of danger.  I blew up my microwave making oatmeal this week. On a grander scale, our species faces deadly problems: climate change, threats to democracy at home and abroad, and the omnipresent threat of nuclear war. Nine countries collectively possess about 1300 nuclear

The man had fallen near an electrified rail of a Chicago subway.  Unconscious, he lay convulsing on the bare track. People on the platform above looked down, stunned.  A few whipped out their cell phones to record the incident. One African American, Anthony Perry, age twenty, made a