Progress Watch In 2014, economies grew, emissions did not

Previous years of CO2  'flatlining' came with economic contraction, but that wasn't the case last year. That kind of carbon-stable expansion of wealth hasn’t happened in four decades, says the International Energy Agency.

Charlie Neibergall/AP

If rising greenhouse gas emissions sometimes seem like an inevitable byproduct of modern prosperity, new data suggests that need not be the case.