Big batteries are key to the planet’s future. But what’s up with these Bolt fires?

The electric vehicle market got a little shake-up this month after Chevy recalled all of its Bolts due to the risk of battery fires. The recall comes as the EV market is getting hot … uh, no. It’s set to explo — nope! There are going to be a lot more sales in the future. Like many people, Marketplace’s Jed Kim would like to know how a lithium-ion battery goes pear-shaped. He asked Kristin Persson, a professor of materials science and engineering at the University of California, Berkeley.