This is something I've followed for a bit of time.
Basically Solar Impulse is an aviation project in which Bertrand Piccard and Andre Boschberg are attempting to fly a solar-powered plane over the world (circumnavigate).
Recently a few days ago the plane completed the supposedly most dangerous leg of the journey, from Japan to Hawaii. The entire leg lasted 116 continuous hours. (Solar Plane Completes Most Dangerous Leg of Epic Flight)
Also a brief overview: Swiss Adventurer Launches Quest to 'Fly Forever'
Thoughts? I think it's interesting and admirable.