Finally, my #1 recommendation for Humanity's Investment is being heeded by a NASA task force. The task force said that "NASA should establish a Planetary Defense Coordination Office to oversee the effort." The catastrophic danger inherent in astroid or cometary impact with earth is so great as to make it an event that must be scanned for and avoided with all urgency.
In my "Top 9" page dealing with what I believe to be the greatest investments humanity should pursue, avoiding impact with large astroids or comets is my number 1 danger listed and I am encouraged by NASA's insistance on looking into this matter more.
The preliminary meeting's report can be found here.