Greenpeace energy is too risky, takes too long to build to address climate change, and claims that most countries, including the U.S., could shift to nearly 100% renewable energy while phasing out nuclear power by 2050. A French journalist under the pen name Olivier Vermont wrote in his book "La Face cachée de Greenpeace" ("The Hidden Face of Greenpeace") that he had joined Greenpeace France and had worked there as a secretary. According to Vermont he found misconduct, and continued to find it, from Amsterdam to the International office. Vermont said he found classified documents according to which half of the
Greenpeace participants advocating early phase-out of ozone depleting substances in the Montreal Protocol. In the early 1990s, Greenpeace developed a CFC-free refrigerator technology, "Greenfreeze" for mass production together with the refrigerator industry. United Nations Environment Programme awarded Greenpeace for "outstanding contributions to the protection of the Earth's ozone layer" in 1997. In 2011 two fifths of the world's total production of refrigerators were based on Greenfreeze technology, with over 600 million units in use. Currently Greenpeace considers global warming to be the greatest environmental problem facing the Earth. Greenpeace calls for global greenhouse gas emissions to peak in 2015 and to