Renewable Sources

The world needs to dramatically reduce its greenhouse gas emissions if there's any hope of preventing worse and more frequent extreme weather events. That means [blank] to renewable sources of energy and, importantly, decarbonizing transportation, a sector that is now responsible for about a quarter of the world's carbon dioxide emissions. But the path to that cleaner future is [blank] , clogged with political and societal roadblocks, as well as scientific [blank] . Perhaps that's one reason why electric vehicles already on the road, already navigating many of these roadblocks, swerved so dramatically into the climate solutions spotlight in 2021. "Just a few years ago, many automakers thought electric vehicles (EVs) might be a passing [blank] , says Gil Tal, director of the Plug-in Hybrid & Electric Vehicle Research Center at the University of California.