Officials from almost 200 countries hunkered down for another night of talks late Friday as a U.N. climate meeting in Madrid went into overtime without agreement on key issues. Chile, which is chairing the talks, said negotiators would continue working on two fronts trying to get deals on aid for poor countries affected by climate change and international carbon markets. “Today is the day when we must show the world that we are capable of delivering the agreements that are needed to tackle the unprecedented challenge before us,” Chilean official Andrés Landerretche told a roomful of exhausted reporters in the Spanish capital after two weeks of talks. Landerretche said there was “some optimism” but added that the Paris agreement’s so-called Article 6, which sets the rules for trading in emissions vouchers, “requires more work in order to come to a cleaner text.” To view the full article visit Clickondetroit.com.