The imperative to stop burning fossil fuels and a proliferation of new tech gadgets like cell phones and smart everything has businesses and governments scrambling to procure the metals that make the magic happen. Mining, refining and even recycling these components comes with a heavy environmental cost. Can we realistically switch from fossil fuels to green energy if obtaining the raw materials cause environmental destruction, political instability and a great deal of human suffering? Vince Beiser traveled all over the world to document the real cost of the new economy.