From: "ronkean at juno.com" <ronkean at juno.com>
Date: Mon, 30 Jun 2008 05:32:43 GMT
To: WSFAlist at KeithLynch.net
Subject: [WSFA] Re: Tunguska event centennial today
Reply-To: WSFA members <WSFAlist at KeithLynch.net>

-- "Mike B." <omni at omniphile.com> wrote:
Keith F. Lynch wrote:

> Could it happen again today, perhaps over a major city?
> Nobody knows.

I do!  Yes, it could.  Very few things in nature are totally unique, and=
 =

anything even close to that sort of event would be "it happening again".=

*
Speculation I have read is that something more or less like that
 happens on Earth with a frequency of about once per hundred years =

 or so, on average.  =

Most of the Earth's surface is ocean or uninhabited land, and the
  human race was far less numerous in centuries past, and that
  would likely explain why no other event 'like that' is remembered as
 part of commonly acknowledged human history.  For example, I think that=
 the Winslow meteor crater in Arizona was made before humans had settled=
 in that part of the world.  But from now on, an event like
 that would almost certainly be noticed, if only because there are
 now satellites continuously monitoring the Earth's surface.

Ron Kean