Bad way to spend money
I'll differ with Benson on this. I think it would be a waste of money flying men off to any old asteroid, before we've found the next one that's going to hit the Earth.
Will manned spaceflight be necessary for dealing with the NEO hazard? My guess is that it will:
http://www.geocities.com/epgrondine
I don't think men are going to visit Near Earh asteroids until 1999 KY 26 is exploited for Mars. Perhaps then KY 26 will be used to "improve" the planet; perhaps KY 26 will be used as a natural cycler. But in either case, that's going to be sometime at least a hundred years down the road.
EP
