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Should former Bush administration and CIA officials be prosecuted for torture ? We hear from the UN special rapporteur on torture, Juan Mendez.

The theory that the water on earth came from comets has been dealt a blow by results from the Rosetta mission. Heather Couper joins us live

One new resident of Detroit tells us of her hopes for the future as the city emerges - finally - from bankruptcy.

plus - the climate change conference in Lima

sexual health in Pakistan.

and the different ways celebrities try to avoid being recognised when they check into hotels.

In-depth reporting and analysis from a global perspective. With Ritula Shah.