Six people have been arrested in DR Congo for allegedly dumping radioactive minerals into a river, officials say.

A green dye used by artists in the 18th Century could be used to make faster, more efficient microchips.

Despite years of war the DR Congo supplies cobalt worth $1.7m to China every week, mainly through illegal channels.

An extension to a giant business park in Tyneside could lead to 17,000 jobs.

Independent auditors appointed to investigate sales of Zambian cobalt two years ago have concluded that the cobalt was sold for sixty-million-dollars below the market price.

DR Congo is set to become a leading exporter of cobalt, used in making long-life batteries, despite the difficulties of a long-running civil war.

Scientists are learning how to manipulate the quantum world in a way that could herald ultra-small electronic circuits.

A new colbalt production venture is expected to become Uganda's second-highest earner of foreign exchange.