Saudi Arabia’s this week to curb its greenhouse gas emissions by 2020 means all of the Group of 20 major economies are promising to take action to fight climate change as part of a United Nations deal they aim to seal in Paris in December. As of Thursday, the UN had received 134 submissions, representing the actions 161 nations are prepared to take as part of a the new agreement, which would be the first to bind all nations to limit their emissions. The 10 biggest emitters have all submitted pledges, with Iran, the 11th biggest, the largest yet to do so. Iranian envoy Majid Shafie-Pour said last month the plan is to do so by mid-November. The UN on Oct. 30 said that the pledges by...
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