Reuters: Wind and solar power could produce 40 percent of the world’s electricity by 2050, but only if government subsidies are secured for the next two decades, scientists said on Wednesday. The technologies will each need global support totaling 10 billion to 20 billion euros ($12.76 billion to $25.51 billion) per year, said Peter Lund, professor in advanced energy systems at Helsinki University of Technology. Without financial and political support, he said wind and solar power would …