Nation-to-nation peer pressure may be best hope for global climate deal

Next week, a body of scientists is expected to present ironclad evidence that links humanity’s fossil-fuel burning and forest-clearing ways to rising temperatures, shrinking glaciers, bulging seas and ferocious bouts of weather. The evidence could nudge global policymakers to reach a grand bargain to overhaul how we live in a bid to stabilize the global climate. But it probably won’t, experts say.

Nearly four years ago, thousands of scientists, diplomats, non-profit workers and activists converged in Copenhagen with hopes that the then most recent version of the Intergovernmental Panel on Climate Change’s assessment report would lead to such a deal. Instead, the world received a non-binding agreement to limit warming to 3.6 degrees Fahrenheit above pre-industrial levels.