An inconvenient truth

I ordered the documentary video An inconvenient truth over netflix. It was an interesting watch. The only problem with Al Gore speaking about global warming is that it sort of brings in the question whether he is presenting the facts accurately. I am so skeptical about politicians. One statement he makes about ozone hole over Antarctica is such a thing. Ozone hole is still big, and this year's observation is one of the record highs. May be he meant only the politics that made US govt sign Montreal protocol. But has it succeeded in bringing down the levels of Chloro Fluoro Carbons? CFC has to eventually clear out of the ecosystem after years, but is the level of decrease in CFC reflecting the ozone hole size? Or has the level of CFC emission actually decreased? In other words is every nation true to Montreal protocol?
There is no denying of global warming. Everyone is experiencing it. Colder winters and hotter summers, droughts and floods, hurricanes and tornadoes, the nature unleashed. Since many tiny drops maketh the ocean, may be its time for each of us to make an effort to reduce green house gas emissions. Though I don't know how much it can change anything, but it is a part of living responsibly.