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NASA finds humanity would totally fumble asteroid defense
(www.theregister.com)
This is a most excellent place for technology news and articles.
I'm roundaboutly reminded of one of my favorite novels - Greener Than You Think, by Ward Moore.
It's a science fiction story about the end of the world that was written in the late 40s. The proximate cause of the end is all of the landmasses of Earth being smothered by a gigantic and very aggressive strain of Bermuda grass, but the real cause is the utter and complete failure, due to ignorance, greed, selfishness, short-sightedness, incompetence, arrogance and so on, of every attempt to combat it.