Comment Re:Throw Rocks (Score 1) 206
How are you going to throw a big enough rock? Consider Meteor Crater in Arizona. This is a crater with diameter less than a mile -- big enough to obliterate most of the core of a city, but not region-wide destruction kind of size.
Bwa ha ha! More than most of the core of a city. Do you think nothing was affected beyond the rim of the crater? If you have been twenty miles away from that impact when that crater was formed, you'd have been quite very dead within seconds of impact. But the heat generated would have insured you had a nice, all-natural cremation.