Reuters: Japan, under pressure to meet emission reduction targets set by the Kyoto Protocol, approved an October start for the trial trading of carbon dioxide, the main greenhouse gas blamed for global warming. “We’ll set down rules in September on how to take part in (a trial carbon trading scheme) and in October we’d like to get started,” Hiroshi Kamagata, director for the cabinet secretariat at Cabinet Office, said at a briefing on Tuesday. Tuesday’s cabinet agreement takes forward …