Tony Fadell led the teams that created the iPod, iPhone, and Nest Learning Thermostat. In his new book, “Build,” he shares everything he’s learned about building great companies and game-changing products. --- Download the Next Big Idea app today at nextbigideaclub.com/app

Arthur C. Brooks used to run a prominent think tank where he was paid handsomely to influence public policy. Did all that success make him happy? Nope. So Arthur quit his job and set out to transform his life. Now he has written a book about what he learned along the way, the #1 New York Times bestseller “From Strength to Strength: Finding Success, Happiness, and Deep Purpose in the Second Half of Life.” --- Want to hear Arthur summarize his new book in just nine minutes? Download the Next Big Idea app and search for Arthur's Book Bite: http://nextbigideaclub.com/app