Kolkata with Sue Perkins

Sue Perkins immerses herself in the complex life of Kolkata and sees how it is reinventing itself as a megacity with a reputation for eccentricity, culture and tolerance.

Eiger: Wall of death

A history of one of the world's most challenging mountains, the Eiger, and its infamous north face. The film gets to the heart of one of Europe's most notorious peaks, exploring its character and its impact on the people who climb it and live in its awesome shadow