Regarding long-term rewards and global warming: What is the actual long term reward here? As I see it, there is no way to collect any sort of reward for helping to prevent global warming by changing your habits. Before the problem gets really problematic, most of us will be dead and burried. I fail to see how "caring for the future generation" has any kind of reward attached to it. Its an act of kindness, but there are no rewards attached to it.