Another thing about this that is often overlooked: The (secular) Pascal’s Wager aspect.
If the Climate skeptics are correct, and we go ahead and make huge changes to radically improve our environment, what’s the worst thing that could happen? A much cleaner, safer, healthier, more sustainable and livable world for all life.
If the Climate skeptics are wrong, and we do nothing, we’re fucked. And we’ve already lost half of all wildlife to pollution since 1970. That’s already happened. Estimates say we’ll lose 2/3rds by 2020, and . . . by 2030, we’ll need two entire earths to handle natural resource needs for the planet. If everyone in the world behaved like average Americans in their consumption and environmental footprint, we’d need four entire earths.