Dr. Laura Stachel's "solar suitcase" is helping health-care workers deliver babies safely in 20 developing countries. Video
The story behind the Hero
On a research trip in Nigeria, Laura Stachel watched as physicians performed an emergency cesarean section.
What happened next stunned her. Full story
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The 'solar suitcase'
Laura Stachel's solar energy kit was designed to help deliver babies. But one recently saved lives during a cholera outbreak. Full story