Reuters: Eradicating greenhouse gases from power stations and cars, trucks and aviation must be Europe’s next policy move to tackle climate change, European Commission President Jose Manuel Barroso said on Wednesday. The statement gives the first glimpse of what the 27-country bloc might do next as it moves toward a greener economy. The European Union last year agreed to cut emissions of the main global warming gas, carbon dioxide, to a fifth below 1990 levels by 2020 — the world’s …