Agence France-Presse: The share of renewables in the global energy mix has increased over the past decade to more than 15 percent but doubts remain over whether a 2030 target of 30 percent is achievable, delegates to an international conference said on Wednesday. Fossil fuels still account for 80 percent of world energy use, threatening efforts to reduce greenhouse gas emissions that are blamed for global warming, delegates said. "The shift towards low carbon energy has started," the executive secretary of the UN Framework...