United States and China advance policies to limit CO2 emissions

China and the United States are the two countries with the most energy-related CO2 emissions, together accounting for about 40% of global emissions in 2012. Late last year, China and the United States each announced intended nationally determined contributions (INDCs) to mitigate their respective emissions, but there is still uncertainty in each country's ability to meet those targets. Further efforts to reduce emissions will be discussed at the upcoming United Nations Climate Change Conference in Paris