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You need to think about the current environmental crisis which is likely to destroy most life on earth within this century.
Stop thinking about what might happen in a few million years.
When was the last time a meteorite destroyed all life on earth?
Besides, It is beyond Man's ability to prevent a catastrophe of that magnitude.
One space shuttle exploded during take off. Another exploded on the return journey. And here is someone talking about destroying meteorites in outer space.
It is you who needs to get real.
sushil_yadav
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