Climate boss says EU can only back a strong Paris deal

By Barbara Lewis BRUSSELS (Reuters) - The European Union will support a U.N. deal to cap global warming only if the agreement is legally binding and includes regular reviews to ensure words translate into deeds, Europe's climate boss said on Thursday. With just 10 days scheduled for formal negotiations before landmark talks begin in Paris on Nov. 30, preparations are painfully slow. European Climate and Energy Commissioner Miguel Arias Canete urged those governments and other "key G20 economies"