Multiple sclerosis (MS) is a disease that affects the brain and spinal cord. It can cause fatigue, trouble with balance and coordination, muscle weakness, and vision problems. Having MS doesn’t ...

JOE SHAPIRO, INVESTIGATIONS, NPR: My name is Joe Shapiro. I'm a correspondent at NPR. I work on the Investigations unit, but I've had a long interest in disability issues. I've been writing about this ...