One night, Dr. Laura Stachel was doing a Ceasarean section when she felt a searing pain go down her back. Diagnosed with degenerating discs, Stachel was forced to give up her work as an OB-GYN and decided instead to study public health. On a research trip to Nigeria, she witnessed shocking conditions at a maternity ward, largely because of the lack of reliable electricity. In response, she invented a "solar suitcase" which has lit millions of births all over the world. Listen to her inspiring story.
