Mysterious Noctilucent Cloud Storm Panorama

I've been to Russia and Canada but never seen these clouds. Strange and mysterious this is a nice photo of them.
7/11/2009
(if not this date go to this link/website and then go to archives link which is on the APOD page lower portion)
http://antwrp.gsfc.nasa.gov/apod/astropix.html

Noctilucent slide video show

Nice video movie with music contains videos and scenes of recent the mysterious high flying noctilucent clouds

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http://www.youtube.com/watch?v=-xF2vSKINK0

Noctilucent clouds are heading further south

Are these strange clouds the result of volcanic eruptions, global warming or something else. Find out further information about these strange clouds

http://www.spaceweather.com/
7/19/2008 (if not this date go to this link/website and then go to archives which is below the page)
http://science.nasa.gov/headlines/y2003/19feb_nlc.htm