The Long Consensus On Climate Change
With the release of the new report by the Intergovernmental Panel on Climate Change tomorrow, the fourth since the organization's founding in 1988, many will be looking for what's new. How have estimates of sea-level rise changed? How soon will we achieve a doubling of carbon dioxide levels?
Scientists and journalists focus on novelty, because both are largely about discovery. But from a policy perspective, what matters is not what's new but what's old. What matters are not the details that may have shifted since the last report, or that may shift again in the next one, but that the broad framework is established beyond a reasonable doubt.… Seguir leyendo »