flashes

It's a idiocy to believe that those "flashes" were result of explosives planted in random places, but what is the explanation for this? QJi6ma7nrU8

Go to 7:50 in this video and watch the sky lobby on the north tower. about 20 stories down from impact zone. You can clearly see small flashes that increase in size http://video.google.com/videoplay?docid=-5370762387415552903&q=bob+and+bri

Here is an interesting article on a exploratory study on acupuncture and hot flashes. What do people think of the study design?