Loose Change: A news roundup

Countries could get a lot closer to bringing the Paris Agreement into effect next week, when United Nations Secretary-General Ban Ki-moon hosts a Sept. 21 event where nations can publicly deposit their documents ratifying the deal. According to U.N. officials, at least 20 countries have indicated they will formally join the deal either ahead of or at the U.N. event, Reuters reports . If those numbers are correct, it would bring countries extremely close to the threshold requiring 55...