The greenest city in Europe has officially upped sticks from the Baltic shores of Estonia to the Spanish Mediterranean. Valencia took over as European Green Capital from Tallinn in a ceremony last week, kickstarting more than 400 sustainable events in 2024. The award has been running since 2010 – generating some healthy rivalry between big EU cities as they transition to clean energy, better protect nature, and improve the lives of residents. “Valencia has earned the Green Capital title because of its ambitious sustainability strategy, and it has learned from lessons in the past,” says EU Comm…