What Does the Present Owe the Future? from Dot Earth, the New York Times’ new blog that “examines efforts to balance human affairs with the planet’s limits”. From the article: “Scientists found that it would take at least 20 or 30 years for the climate to measurably ‘notice’ the difference between freezing greenhouse emissions now, or having a global fossil fuel party — with everyone jumping in Hummers and jacking up thermostats. So it is all about our legacy in the end.”