From Lomborg (HT Ryan Murphy).
Here's a good rule of thumb for people: transitional technology is just that. Don't think of yourself as God's gift to the planet. Think of yourself as one of millions of people involved in a slow process of improvement over time that is far more incremental and subject to one-step-forward-two-steps-back on occasion than you think.
As I've said before with respect to Willie Nelson, Owen Wilson, Woody Harrelson, and Kris Kristofferson's "sustainable" private community in Maui: "sustainable" is a social, not an individual adjective.
All this green tech and sustainability stuff is great and it's the way we get to sustainability of the whole system - but don't misunderstand the extent of the contribution.