The move is key to Guinea’s economy and Simandou's development, which has been complicated by its location far from the coast and the cost of infrastructure.

Experiments on the International Space Station show that bacteria could enhance the removal of rare earth elements from basalt in lunar and Martian landscapes.

“The Spirit of the Rose”— a flawless 14.83-carat pink gem — sold for $26.6 million at Sothbey’s in Geneva.

Nova is buying a 2.4% NSR royalty on a portion of the Twin Metals project, its first in the US.