In 1999, the Swiss explorer Bertrand Piccard became the first person to circumnavigate the globe in a balloon. The journey took three weeks but he almost didn’t make it, nearly running out of fuel. That close call inspired Piccard to attempt another flight around the world–this time without relying on fossil fuels. Today he is just years away from accomplishing that dream. This time the trip won’t be in a balloon, but a plane. Piccard, and his partner, Andre Borschberg, are the first to build and fly a solar powered plane that can fly at night. The two join Diane for the hour to talk about adventure, innovation and the flying without fossil fuel.