Strong geological evidence for liquid water on Mars in the past
The latest business and finance news from around the world, on the BBC.
Can Libya ever be united again after its revolution in 2011?
Colombian journalist Jineth Bedoya Lima on her search for justice after torture and rape
The Dalai Lama, Manu Joseph and Sebastian Faulkes at largest literary festival in India
Stephanie Flanders reports from Davos, speaking to the Chief Executive of Goldman Sachs
Zero Dark Thirty: controversial movie tells the story of the hunt for Osama bin Laden
How unmanned aerial vehicles used for overseas missions are watching Americans at home
Mike Williams explores the myths and mysteries of the mirror
Saturday 26 January 2013