Steel scaffolds our world, undergirding buildings and machines. It also presents a major challenge for climate change, since steel production largely relies on polluting fossil fuels. The automotive industry could be a key player in turning things around. Steel production is currently responsible for about 7% of global greenhouse gas emissions. There's a growing array...

This is today's edition ofThe Download,our weekday newsletter that provides a daily dose of what's going on in the world of technology. How the auto industry could steer the world toward green steel Steel scaffolds our world, undergirding buildings and machines. It also presents a major challenge for climate change, as steel production is currently...