Dan Buettner is a National Geographic Explorer, a writer, and the founder of Quest Network, Inc. His 2005 cover story for National Geographic magazine, "Secrets of Living Longer," was a finalist for the National Magazine Award. He has appeared on CNN, David Letterman, Good Morning America, Primetime Live, and the Today Show to discuss his Blue Zone research and has delivered more than 500 keynote speeches over the last 10 years.