The Science — The latest scientific findings hung heavily over the opening of the UN Climate Conference in Madrid today. Dr. Hoesung Lee, who heads the Intergovernmental Panel on Climate Change (IPCC), framed the situation squarely when he told the huge, and full, plenary room that emissions were continuing to rise. “We are clearly in a crisis.” The impacts of climate change were accelerating, and the world was risking reaching the limits of adaption. If we stay on the same path, he said, there will be “enormous negative consequences,” including to health, safety and security. “We are clearly not doing enough.”