Haha good point about the jets. I can't see world leaders jetpooling though.

Do you think individuals have the most power to cause change? Maybe. Some of the things you suggested might work. I'd even add that people should educate themselves on the companies they purchase from. This would pressure companies to change policies and may cause bigger waves...

Whether global warming is true or not, we have limited resources so I think investing in renewables is a great idea. China is actually throwing tons of money that way right now.