Leaders of the Group of 20 economies on Sunday highlighted the importance of achieving global net zero greenhouse gas emissions "by or around mid-century," in what was seen as a vague commitment as many of them head to crucial U.N. climate talks.They vowed to end public financing for new coal power generation in other countries by the end of 2021, but set no target for phasing out the dirtiest fossil fuel domestically in a declaration issued after their two-day meeting in Rome.Gathering for the first in-person G-20 summit in two years, the leaders also pledged to help advance a global goal …READ FULL ARTICLE