After Hurricane Harvey flooded her city of Houston in August, Dr. Jennifer McQuade planned to donate socks to those affected. Instead, surprised by the lack of medical care at a nearby shelter, McQuade, an oncologist, became the unofficial leader of a group of...

One of the first things Karen Caraballo noticed from the window of her plane is how colorless Puerto Rico looked, as if it’s a war zone. “There is no green, everything looks gray, and dark, and dirty,” she said. On Saturday, Caraballo, who lives in Bay Ridge,...