An estimated 29 million are trapped in forced labour of one kind or another
The daily drama of money and work from the BBC.
President Obama is set to announce new curbs on America's most polluting power source
Are Western investors flocking to Sri Lanka now that the civil war is over?
How to rebuild Serbia and Bosnia after the floods - and avoid the landmines.
The chemical element that has brought life and death to humanity, both on an epic scale
Global warming and the businesses trying to make a profit from it.