Natural phenomenon or sign from G-d?

http://www.foxnews.com/world/2010/04/15/icelands-volcanic-ash-halts-flights-europe-137061971/

I believe that this volcano erupting is G-d sending us a message. Since the main effect of it was people's flights being canceled I think G-d is communicating us to slow down and appreciate what we have more. Why do millions of people fly around the world every year? I think its because people feel a lack of completion. The need to conquer a new place by visiting it or to escape there life for whatever reason. We need to take this as a lesson to slow down and not feel the need to run away to feel good. Or the fact that running away from your problems will never solve anything.