The radiant, inspirational life of the first African woman to win a Nobel Peace Prize, Wangari Maathai.

Sandra Magsamen shares her ideas on how you could make the world a better place.

Environmentalist Elizabeth Rogers provides definitions of the most common green-related terms.

Desmond Tutu says Aung San Suu Ky is Burma's Nelson Mandela.

What do you do when your hometown is dying - wheezing in the shadow of massive oil refineries spewing poison through parks and playgrounds around the clock? If you're Hilton Kelley, you get angry. Then you get smart - raising your voice, raising money, and raising awareness as one of the most effective, exciting activists of your generation.