I just spent the last couple hours on TED. www.ted.com. It's really an amazing concept and one in which I wholeheartedly recommend anyone who believes in a better future for humankind spend some quality time with.
The last video I downloaded from TED was one about Bill Stone, a different breed of explorer, the kind of which we've only imagined since the by-gone days of the search for the NorthWest Passage. He's got a plan to build a new fueling station on the southern pole of the moon to facilitate space exploration - and in only 7 years.