Acclaimed ballerina Misty Copeland joined Diane to talk about her remarkable career and how she is challenging physical stereotypes that she says keep ballet stuck in the past.
William Kamkwamba describes dreaming of bringing light to his village in Africa and how he taught himself physics and used spare parts to build a windmill that produced electricity.
- William Kamkwamba a student at the Pan-African Leadership Academy in South Africa and a 2007 TED Global Fellow.
- Bryan Mealer author of "All Things Must Fight to Live" and a former Associated Press correspondent in the Democratic Republic of Congo.
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