Foreign Policy: The State of Nature

What if we can't afford to save the world? An interesting debate between Sierra Club’s Carl Pope and the outspoken Bjørn Lomborg. (The “saving the world” bit might seem like hyperbole, but the really interesting question this debate sparks for me is this: Hypothetically, if it really came down to it, would anyone be willing to save the world for free? And if not, what does that imply about our values system and personal priorities? What does it say about the practical utility and limitations of monetary-based economic systems? [from MetaFilter.com]