On 31 October 2013 12:13, meekerdb <meeke...@verizon.net> wrote:

> Of course if there are 7 billion people it's more likely there will be
> survivors than if there are only few million.  But an asteroid strike could
> easily be big enough to wipe-out all terrestrial life bigger than
> bacteria.  We have the concept now, but we don't have any ability to do
> anything about it and we probably still won't fifty years from now.

But we might in 100 years, or 200, if we continue to advance
technologically, which still gives us a good chance of averting any
impending impacts. Whereas if we revert to, say, a Medieval level of
technology, we'll have no chance whatsoever.

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