Consider the recent beautifull displays and this photo taken on July 11th. 2005 (Milnathort, Kinross). At the time I was hoping to catch a glimpse of aurora (unusual during summer months because of the shot period of darkness) since an Earth directed coronal mass ejection (CME) was due to arrive.
This is another absolutely stunning display that ended with crepuscular rays showing through the pre dawn sky. (I've forgotten when it was taken but it was a few years ago, if I can find out I'll let you know).
NLCs are fairly common at this lat. during the summer months and whilst I can't deny the rececent displays have been great they aren't that rare.
A few theories exist as to why they seem to be more prelevant at the moment and these range from high level polution from jet and rocket exhaust, sunspot activity (or lack of it) to them being just a normal part of Earth's fascinating variation.
So, What are the leading theories of board members? Are more folk looking therefore we see and hear more reports or are they a portent of impending doom?
Be creative, (but polite as always!)