UN Chief Returns as Climate Talks Teeter Closer to Collapse

The United Nations secretary-general flew back to global climate talks in Poland Wednesday to appeal to countries to reach an agreement, as some observers feared the meeting might end without a deal. U.N. chief Antonio Guterres opened the talks last week, telling leaders to take the threat of global warming seriously and calling it "the most important issue we face."   But as the two-week meeting shifted from the technical to political phase, with ministers taking...

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