Montreal Gazette: The climate-change pact reached this week between the United States and China is a game-changer in international environmental politics that puts pressure on Canada to get serious about reducing emissions.
As the world`s two biggest economies, the U.S. and China are also its two largest greenhouse gas producers, together accounting for 40 per cent of global emissions.
Under the deal, the U.S. has agreed to accelerate its target of cutting carbon emissions by between 26 per cent and 28 per cent...