Time Magazine: Over the past decade, the European Union has shown it can talk the talk on cutting greenhouse gas emissions, as it firmly and loudly backed the Kyoto Accord. But it now needs to show it can walk the walk, since the Union is still lagging badly in achieving its stated goal of a 20% cut in greenhouse gas emissions by 2020 compared with 1990 levels. On Friday, E.U. leaders ended their two-day Brussels summit by throwing their weight behind a more precise timetable for those goals. Still, not …