Agence France-Presse: Rich and poor nations need a “clean energy revolution” in order to cut greenhouse gas emissions responsible for global warming, UN chief Ban Ki-moon said here Wednesday. “We cannot achieve the (poverty-reduction) Millennium Development Goals without providing access to affordable modern energy,” he said as he opened a day-long energy conference. Noting that 1.6 billion people around the world lack access to electricity while two to three billion still rely on traditional energy …