Sleeping sickness is one of the most deadly of the forgotten diseases. Experts thought it had been destroyed decades ago. But it's back with a vengeance and now mobile field teams are out in the bush carrying out blood tests and lumber...

A yellow diamond discovered in a Canadian mine in October is said to be the largest in North America.

Sept. 22 -- Bruce Cleaver, De Beers chief executive officer, discusses the company's plans for new diamond mines with Bloomberg's Vonnie Quinn at the U.S.-Africa Business Forum in New York.