China is itching to mine the ocean floor 

SCATTERED ACROSS the ocean floor are trillions of lumps of nickel, copper, cobalt and manganese. Companies have long wanted to mine them: these “critical minerals” are needed in vast quantities to electrify the global economy and cut dependence on fossil fuels. But the International Seabed Authority (ISA), a UN body, is still figuring out how mining should be regulated. Some environmental groups want an outright ban. Supporters and critics of deep-sea mining are hashing out these issues at an ISA meeting in Jamaica between July 29th and August 2nd. Of the 160-odd countries participating, few have more interest in the outcome than China.