Batteries are finding their way into everything – from cars to heavy equipment to the electric grid.

But scaling up production to meet the demands of a net-zero economy is complicated and contentious. In this 5-episode season, we’re digging into the ways batteries are made and asking: what gets mined, traded, and consumed on the road to decarbonization?

Season 4 of The Big Switch drops Feb 28th. Listen on Apple podcasts, Spotify, or wherever you get your podcasts.