Climate Pact on Methane Advances as 24 Nations Join U.S., EU

Two dozen more countries have joined a global pact to pare methane emissions, the U.S. and the European Union announced Monday, as world leaders seek to galvanize momentum against the potent greenhouse gas before critical climate talks in Scotland. 

With the addition of Canada, France, Germany and others, nations backing the pledge now represent about 30% of global methane emissions and 60% of the global economy.