Does the world face a looming glut of this devilish yellow element?
Is the age of oil drawing to an end?
The latest business and finance news from around the world, on the BBC.
Stock markets drop sharply for a second day as fears grow of a fresh economic slowdown.
What has been the effect of a corruption scandal on one of Africa's poorest nations?
Samsung's shocking profit warning and its low-cost Chinese competitors
Leaders from around the world meet in Washington to discuss the Ebola virus.