Pope Francis in his 2015 Encyclical letter “Laudato si on the need for a rapid move to renewable energy “in the next few years”: “There is an urgent need to develop policies so that, in the next few years, the emission of carbon dioxide and other highly polluting gases can be drastically reduced - for example, substituting for fossil fuels and developing sources of renewable energy. Worldwide there is minimal access to clean and renewable energy. There is still a need to develop adequate storage technologies.We know that technology based on the use of highly-polluting fossil fuels - especially coal, but also oil and, to a lesser degree, gas - needs to be progressively replaced without delay. Until greater progress is made in developing widely accessible sources of renewable energy, it is legitimate to choose the lesser of two evils or to find short-term solutions. But the international community has still not reached adequate agreements about the responsibility for paying the costs of this energy transition” (Pope Francis, Encyclical Letter “Laudato si”, 2015: http://w2.vatican.va/content/francesco/en/encyclicals/documents/papa-francesco_20150524_enciclica-laudato-si.html and Pope Francis quoted in “Key excerpts from the Pope’s encyclical on the environment”, ABC News, 19 June 2015: http://www.abc.net.au/news/2015-06-19/pope-francis-warns-humanity-about-pace-of-consumption/6557822 ).