Agence France-Presse: The European Union and Japan decided to join forces in the battle against climate change and invited large countries to follow suit at a summit meeting in Prague on Monday. “Japan and the EU are aiming at building a low-carbon society. We believe that it is necessary for the United States, China, Russia to participate in a responsible manner,” Japanese Prime Minister Taro Aso told reporters. US President Barack Obama vowed last month in Prague that the United States was “now …