
Toward a Viable Climate Target
May 18, 2016 explains why reductions in greenhouse-gas emission make better targets than temperature thresholds.
Oliver Geden is head of the European Union research division at Stiftung Wissenschaft und Politik, the German Institute for International and Security Affairs.
May 18, 2016 explains why reductions in greenhouse-gas emission make better targets than temperature thresholds.
Nov 23, 2015 explains why a more modest, bottom-up approach to fighting global warming has emerged.
Aug 7, 2013 on replacing the top-down approach to global climate policy.
Nearly three months after Russia launched its invasion, Western countries appear more committed than ever to Ukraine’s defense, and, in some quarters, to Russia’s defeat. We asked PS commentators what outcome the West, Russia, and Ukrainians themselves can realistically expect.