Yale Environment 360: Japan's carbon dioxide emissions reached their highest levels since 2007 last year, according to a government analysis of data for the year ending in March 2014. Greenhouse gas emissions had been on a downward trend as the country replaced coal and natural gas power stations with nuclear plants. However, all 48 of Japan's nuclear power reactors have been offline since September 2013 the result of rigorous safety checks enacted after the 2011 Fukushima disaster, Reuters reports. The country has...