Investment in renewable energies down in 2013. - Investment in renewable energies - not including large hydroelectric dams - was down in 2013, according to a study by the United Nations Environment Programme (UNEP). Globally, investment stood at $214 billion, or 14% less than in 2012 and 23% less than in 2011, the record year. The drop was particularly steep in Europe, which was overtaken by China for the first time. UNEP attributes this decline to two main factors: political uncertainty on...