The latest research into the link between germs and mental illness -- and what we all need to know.
Guest Host: Susan Page
The 2004 winner of the Nobel Peace Prize discusses how the Green Belt Movement she founded led from planting trees to sowing the seeds of democracy in Kenya. Maathai is the first African woman and first environmentalist to win the prize.
- Wangari Maathai Founder of the Green Belt Movement, member of Kenya's Parliament, and recipient of the 2004 Nobel Peace Prize.
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