I just found this really interesting-looking website. I have only looked at a page or to so far, but I think it is potentially useful, at least as a discussion starter.
… I do wonder where this information is from. Where did the writer get their information? Can they verify all the facts listed? How can we know and trust that all the information contained within this website is real and true? Who is in a position to critique this site?
Anyway, it makes for some interesting reading.
I also just found this website with new photos from the volcano in Iceland which is disrupting air-traffic throughout Europe: