Katie Couric, in Her New World 3.0 Series, Interviews Brian Chesky, Co-Founder of AirBnB | yahoo.com
These are the two magic words that have led to some of the most profound and game-changing innovation in history: "What if?" And with my new digital series "World 3.0," I'll speak with some of the men and women who have asked that question in tech, science, medicine, business and philanthropy and have found answers that improved — and in some cases disrupted — their industries. Brian Chesky is one of those people.