I noticed that Nature article mentions that the people who watch for incoming objects look for things "between 100 metres and a kilometre in size," and this was around 15 meters. That means that things that are too small for them to spot could still potentially do a lot of damage. Consider the meteor crater in Arizona, which was created by something well below 100 meters...
	
	
	
	
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					Meteor explodes over Russia this morning!
				 
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 Meteor explodes over Russia this morning! - by SilverFang01 - 02-15-2013, 12:32 PM 
[No subject] - by Dartz - 02-15-2013, 01:24 PM 
[No subject] - by Rod.H - 02-15-2013, 04:15 PM 
[No subject] - by Bob Schroeck - 02-15-2013, 04:46 PM 
[No subject] - by Ebony - 02-15-2013, 05:09 PM 
[No subject] - by DHBirr - 02-15-2013, 06:04 PM 
[No subject] - by Dartz - 02-15-2013, 06:11 PM 
[No subject] - by werehawk - 02-15-2013, 07:00 PM 
[No subject] - by ordnance11 - 02-15-2013, 07:52 PM 
[No subject] - by Dartz - 02-15-2013, 08:51 PM 
[No subject] - by SilverFang01 - 02-16-2013, 01:12 AM 
[No subject] - by khagler - 02-16-2013, 02:31 AM 
[No subject] - by robkelk - 02-16-2013, 03:17 AM 
[No subject] - by robkelk - 02-16-2013, 05:38 PM 
[No subject] - by SkyeFire - 02-18-2013, 10:25 PM 
[No subject] - by Logan Darklighter - 02-19-2013, 06:51 AM 
[No subject] - by Bob Schroeck - 10-17-2013, 06:48 PM 
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