THE ONLY thing that can accelerate as fast as an electric car is the price of the most expensive metal in its batteries. Once a niche input used to strengthen turbine blades, cobalt’s value has soared since it started to feature in modern electronics. Most phones need a few grams’ worth, and every car requires 5-10kg. That adds up.

THE ONLY thing that can accelerate as fast as an electric car is the price of the most expensive metal in its batteries. Once a niche input used to strengthen turbine blades, cobalt’s value has soared since it started to feature in modern electronics. Most phones need a few grams’ worth, and every car requires 5-10kg. That adds up.