When Wangari Maathai suggested to women in her village that they should plant trees for fire wood and to stop soil erosion, she had no idea that this simple act of planting trees would eventually garner her the Nobel Peace Prize. The Takeaway is joined by Wangari Maathai Nobel Prize winning activist, founder of the Greenbelt Movement, and author of the new book, The Challenge for Africa, about her vision for the future. Her life is subject of the documentary Taking Root: The Vision of Wangari Maathai, which premiered on the PBS series Independent Lens this week.

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Here is a preview of the documentary: