Global carbon dioxide emissions from the energy sector stalled in 2014, the first time in 40 years during a period of economic growth, the International Energy Agency says.

By far the main culprit in global warming, carbon dioxide emissions stood at 32.3 billion tonnes in 2014, unchanged from the previous year, the IEA said. “This is both a very welcome surprise and a significant one,” IEA chief economist Fatih Birol said. “It provides much-needed momentum to negotiators preparing…