Global warming is always a brilliant excuse for governments to jack up taxes on certain things, i.e. petrol, road tax, etc. The press doesn't help, scaring the crap out of people and saying it's their fault and everything is going to melt, billions will die and watching a polar bear go for a swim makes much better news than saying: 'The earth is just in it's natural cycle and you can expect things to warm up for a few years before getting bloody cold again. Life has always survived it in the past and we damn sure have the technology to survive it this time.'
As the professor says, scientist won't speak against global warming even tho that's what the evidence is telling them because they'll lose all their government funding.
If they really want to cut down on green house emmisions then they should just cut the number of cows out there back to their natural level when they were wild. Those walking methane plants kick out a hell of a lot more harmful gas than the V8 sitting in an SUV (don't ask me how much more as i can't remember exactly, but it is a hell of a lot more!)