Clock starts ticking to implement Paris climate deal

By Megan Rowling BARCELONA (Thomson Reuters Foundation) - A new global agreement to tackle climate change will take effect on Nov. 4 after the accord crossed an important threshold for support late on Wednesday. European nations, Canada, Bolivia and Nepal boosted official backing for the 2015 Paris Agreement to countries representing more than 55 percent of world greenhouse gas emissions, as needed for implementation. By Thursday, 74 countries or parties to the U.N. climate change convention had