President Joe Biden’s new commitment to cut U.S. emissions in half over the coming decade from 2005 levels, with an aim to zero out planet-warming gases in the next 30 years, is the most ambitious climate goal yet by an American leader. Yet it isn’t the most far-reaching goal on the international stage, coming in behind the U.K. and the European Union. And it’s unlikely to prove sufficient to keep average global temperature rise below 1.5°C, according to nonprofit Climate Action Tracker. Before Donald Trump pulled out of the Paris accord, the U.S. had set a target to cut emissions by about 26% by 2025 from 2005 levels. Maintaining that trajectory would mean a roughly 34% reduction by 2030, according to clean energy research group BloombergNEF. Biden’s new emissions goal raises that ambition by about a third. But to avoid 1.5°C of warming, according to Climate Action Tracker, the […]