Sustainability in Space

Jon Goff at Selenian Boondocks has some thoughts about OSTP Director Dr. John Marburger's recent speach that features Centennial Challenges as a small effort that NASA is doing that's in the right direction, and an idea about an orbital propellant depot prize. These are minor parts of the overall discussion, though. He also has related comments about sustainability in space efforts. There are related links at RLV News, Transterrestrial Musings, and Curmudgeon's Corner (go to the Sunday March 09, 2008 posts for the last link - I'm not sure how to get the permalink on that one).