Associated Press: China’s three largest energy suppliers emitted more greenhouse gases than all of Britain last year, environmental watchdog Greenpeace China said in a report issued Tuesday. The report reflects the heavy reliance on coal that is hampering China’s efforts to tackle climate change. The country’s 10 largest power companies supply nearly 60 percent of China’s energy. They burned a fifth of all of China’s coal in 2008 and emitted about 1.44 billion tons of carbon dioxide, which …