Here’s a multiple-choice question. When you get really close to a goal that you’ve worked towards for decades, should you: Redouble efforts. Stay the course. Reverse course and do less. Number three ...

In the 1940s and 1950s, hospital wards in the U.S. were filled with iron lungs helping many children, and some adults, who had polio breathe and stay alive. The use of polio vaccines have helped make ...

It was like a horror movie. The invisible polio virus would strike, leaving young children on crutches, in wheelchairs or in a dreaded “iron lung” ventilator. Each summer, the fear was so great that ...