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One year on

World leaders met in Paris, France, last year at COP21 and agreed to keep global warming under 2 degrees Celsius compared with pre-industrial times. Image credit: U.S. Department of State/ public domain
World leaders met in Paris, France, last year at COP21 and agreed to keep global warming under 2 degrees Celsius compared with pre-industrial times. Image credit: U.S. Department of State/ public domain

This December marks one year on from the Paris agreement, where world governments agreed to keep global warming to within 2 degrees Celsius of the average pre-industrial temperature. To mark the occasion, Horizon takes stock of the situation and examines the challenges ahead. We speak to scientists who are mapping a pathway for governments to cut back on emissions, we host a debate on steel - one of Europe’s most polluting industries, and we look the progress of carbon capture and storage. We also interview Professor Hans Joachim Schellnhuber, founder of the Potsdam Institute in Germany, who was the first to propose that 2 degrees should be set as a limit for global warming.