Batteries being drained of power to be safe to handle before they are dismantled at battery recycling company Hydrovolt's plant in Fredrikstad, southeastern Norway. on June 20, 2023. Photos: Petter Berntsen/AFP
Wearing a white lab coat and with a gas mask within reach, Ole Jorgen Gronvold measures the humidity of an intriguing dark powder touted as the planet's next "black gold".
But this "black gold" – a term that usually refers to oil – is actually good for the Earth.
