Like so many other things, people slap a magnet on the back of their minivan to Raise Awareness, and then pretend they've done something. You being all alarmed or convinced or otherwise aware of the problem after seeing the movie, doesn't actually accomplish anything.
DO SOMETHING.
Plant a tree. Plant a thousand trees. Install solar panels. Change your light bulbs over to LED. Turn down the thermostat. Properly inflate your tires. Get a job closer to home. DO SOMETHING.
I've planted around 10,000 trees, and installed around 10KW of solar panels. The solar panels are on a 4-5 year schedule to pay back the money spent on them, after which it's pure profit. AND, all the CO2 emissions that have been avoided by having them producing energy. I changed jobs to reduce my drive by an hour a day. We even gave tree seedlings to our wedding reception guests. Maybe I don't have a magnet on the back of my car, but, to me, actually doing something about it is more important than "raising awareness".
Solar is a great way to do something, and, have a great investment. Where else can you put your money and get a ~5 year ROI?