"The answer to the first question should we be monitoring what's out there is yes, but not with the urgency so many advocate. And to the second question should we be prepping the defenses the answer is not likely. We may get some very smart, very famous people arguing counter to this, but even smart people fall prey to a common human fallacy: risk estimation when the odds are low but the consequences are great. ... There are real dangers to Earth (and to the humans on it) facing us today, but asteroids aren't one of them. If our species sticks around for another few thousand years, it will be time to make that investment. But until then? We've got a planet to save, and an entire Universe to discover."
Keith's note: This has to be one of the dumbest things I have read in a long time. Forbes doesn't fact check their articles, so it would seem. The author uses lots of numbers in his article. But when you ask the author for the specific sources of his data - data used to make specific risk assessment statements, he won't provide it.