Threat of cobalt supply crunch could hinder EV growth

A burgeoning risk of a supply crunch in cobalt -- a key battery metal that has more than tripled in price in two years -- poses one of the biggest threats to forecasts for rising electric vehicle adoption.

UPDATED: 5/18/18 10:29 am ET - corrected
GM will equip big '19 pickups with I-4 turbo in mpg battle vs. Ford, Ram

GM is doubling the number of engines available on the retooled 2019 Chevrolet Silverado and GMC Sierra, including a new four-cylinder turbocharged engine that can run on two cylinders to increase fuel economy. The 2.7-liter, I-4 turbo is a milestone for the company and industry.

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