I had not seen this movie (An Unconvenient Truth) until very recently. Although there's a little bit of self-procrastination in not being elected President of the USA in this movie, Al Gore does a wonderful job at showing examples of what's happening with our planet earth, and that each one of us can start contributing to solving the problem.
I encourage you to watch the movie, and read more, debate about it, and start doing something about it.
I also recommend watching The Climate Challenge session about global warming at the recent DLD conference (my review coming up soon).
Global warming is happening, and the impact for our kids' world is a concern of us TODAY.