Much of the world’s efforts to mitigate the effects of climate change hinge on the success of the landmark 2015 Paris Agreement. A new study is the first to provide scientific evidence assessing how effective governments will be at implementing their commitments to the agreement that will reduce carbon dioxide emissions causing climate change.Much of the world’s efforts to mitigate the effects of climate change hinge on the success of the landmark 2015 Paris Agreement. A new study is the first to provide scientific evidence assessing how effective governments will be at implementing their commitments to the agreement that will reduce carbon dioxide emissions causing climate change.