![Nancy Duarte: The secret structure of great talks](https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/b27e44e9-3fc2-467c-919d-dd0db21359d1/NancyDuarte_2011X-embed.jpg?h=200)
From the "I have a dream" speech to Steve Jobs' iPhone launch, many great talks have a common structure that helps their message resonate with listeners. In this talk, presentation expert Nancy Duarte shares practical lessons on how to make a powerful call-to-action.