The forecast for climate change has been undeniably altered overnight — positive news for the planet and for economic growth.
U.S. President Barack Obama and Chinese President Xi Jinping, the leaders of the world's two largest economies and two largest emitters of pollutants into the atmosphere, demonstrated that, together, they are leading the global fight against climate change.
Their commitments are an absolutely essential first step if we are to hold the warming of the planet under 2 degrees Celsius, and avoid the disastrous consequences of an even more uncertain world. China committed to an emissions peak by 2030, with 20 percent of its energy coming from renewable sources, and the United States agreed to reduce its emissions by 26-28 percent below 2005 levels by 2025. Importantly, they agreed to expand their joint clean energy research and development.