Rush for lithium, cobalt and nickel is ravaging livelihoods, water and health of world’s most vulnerable, UN study says Rush for lithium, cobalt and nickel is ravaging livelihoods, water and health of world’s most vulnerable, UN study says Critical minerals such as lithium, cobalt and nickel are becoming the “oil of the 21st century” as the scramble for precious metals deepens poverty and creates public health crises in some of the world’s most vulnerable communities, a report by the UN’s water