It's not enough to just have a great idea and people will follow you. So Nancy Duarte and Patti Sanchez work with leaders to communicate their transformational ideas to drive real change–such as Al Gore's "Inconvenient Truth" presentation and Michael Pollan's call to eat mostly plants. And now they have written a book for leaders called "Illuminate. Ignite change through speeches, stories, ceremonies and symbols." Duarte and Sanchez also run Duarte Inc., the largest communications company in Silicon Valley, and the 5th largest women-owned business in the area and they are partners to top brands around the world. Listen to our conversation on iTunes or NPR One.