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Meteor Threat
NASA Asteroid Threat Page (local copy)
Search For Extraterrestrial Intelligence (SETI)
How Stable is the Earth's Climate?

Cost to Orbit
Nine Levels of Technology Readiness
Seven Steps in System Procurement
Local Copy of Richard Feynmann's Report on the Challenger Disaster

 
   
The amount of progress in a society is not some fixed quantity, that has to be applied either to social, technological, or scientific progress.