Global climate accord signed in Geneva after marathon negotiations •African Union launches continent-wide payments network •Markets rally as central banks signal coordinated easing •Vaccine trial reports 74% efficacy against drug-resistant TB •Underdogs claim continental football crown in stoppage-time drama •Global climate accord signed in Geneva after marathon negotiations •African Union launches continent-wide payments network •Markets rally as central banks signal coordinated easing •Vaccine trial reports 74% efficacy against drug-resistant TB •Underdogs claim continental football crown in stoppage-time drama •