redOrbit: Nuclear power is vital to reducing carbon dioxide emissions, and a report Wednesday said that nearly 25 percent of global electricity could be generated by the power source by 2050. A study by the International Energy Agency and the Organization for Economic Cooperation and Development described the target as “ambitious but achievable.” “Nuclear is already one of the main sources of low-carbon energy today,” said Luis Echavarri of the OECD’s Nuclear Energy Agency. “If we …