That's according to the International Energy Agency, which said in its global energy outlook published Wednesday that more aggressive climate action is needed as world leaders prepare for the crucial COP26 summit in Glasgow in November. "The world's hugely encouraging clean energy momentum is running up against the stubborn incumbency of fossil fuels in our energy systems," Executive Director Fatih Birol said in a statement. "Governments need to resolve this at COP26 by giving a clear and unmistakeable signal that they are committed to rapidly scaling up the clean and resilient technologies of the future."