What’s black, shaped like a potato and found in the suitcases of Pacific leaders when they leave a regional summit in the Cook Islands this week? It’s called a seabed nodule, a clump of metallic substances that form at a rate of just centimetres over millions of years.
Deep-sea mining advocates say they could be the answer to global demand for minerals to make batteries and transform economies away from fossil fuels. The prime minister of the Cook Islands, Mark Brown, is offering nodules as mementos to fellow leaders from the Pacific Islands Forum (Pif), a bloc of 16 countries and two territories that wraps up its most important annual political meeting on Friday.
