Dan Buettner wanted to understand why certain people in particular areas of the world lived longer, healthier and happier lives, so he traveled across the planet to get answers. The result is a best-selling book called The Blue Zones: Lessons for Living Longer from the People Who’ve Lived the Longest, which examines how people live and how lifestyle affects lifespan. The book focuses on four areas — Okinawa, Japan; Nicoya Peninsula in Costa Rica; Sardinia, Italy; and Loma Linda, California — and demonstrates that everyday factors were involved, such as food, friends and perspective. This first book led to an international profile for Buettner that resulted in repeat appearances on “The Oprah Winfrey Show” and other television outlets. He is also a National Geographic Explorer and holds three Guinness World Records for long distance cycling.