Deutsche Presse-Agentur: The world’s 20 major greenhouse gas emitters ended two days of discussions in Japan Sunday without reaching consensus on a concrete plan to tackle climate change. Senior officials and experts from the Group of 20 nations (G-20), which are responsible for 80 per cent of the world’s CO2 emissions, however, agreed with former British Prime Minister Tony Blair’s conviction. Former British Prime Minister Tony Blair on Saturday urged the G-20 members to take collective action to reduce …