Detailed text transcripts for TV channel - MSNBC - 20130531:18:45:00
Extensive extinctions as well of life of certain kinds on the planet. let's say, it wouldn't be a very good day. the really good thing, craig, is that, the united states researchers have put together enough equipment and enough teams to have been able to identify 98% of the asteroids of this size. that's a really good thing. so we know where most of these of this size are. what we now have to do is we have to turn our attention to identify the smaller asteroids, those that won't destroy the planet or cause a lot of extinctions, but those that might destroy a city or a reg n region. those are s...