After the 2010 earthquake, Tony Boursiquot hurried home to help save Haiti's next generation.
A growing numbers of skiers in Colorado want to try backcountry skiing, away from the groomed and patrolled trails. Shan Sethna's classes help newcomers learn about avalanche dangers.
In Israel, most Ethiopian Jews are trapped at the bottom of society in dead-end jobs. Asher Elias gives them high-tech training to boost their upward mobility.
Biologist Álvaro Cogollo draws on Colombia's native vallenato music to inspire a love for his country's biodiversity.