Interesting and Informative Links:
NASA Orbital Debris Program Office
Spacebook: Track Orbital Debris Yourself!
Report on Satellite Life Extension
NASA’s Orbital Debris Quarterly News
U.S. Strategic Command Information on Decaying Satellite Intervention
Spacebook Debris Tracking Tool
WIRED Article on How to Track Orbital Debris Online
Warning by NASA Scientists About Space Junk in 2006