By Gavin Esler
Presenter, BBC Newsnight
Presented by Gavin Esler
Click here to comment on Tuesday's programme
Patients suffering from incurable diseases have been paying thousands of pounds for unproven pioneering stem cell treatments.
We have uncovered evidence that a South African-based man called Steven Van Rooyen and a company - Advanced Cell Therapeutics or ACT - is behind the treatments. Mr Van Rooyen is already wanted by the FBI in the United States for selling false and misleading stem cell treatments. Susan Watts will have the details.
Read Susan Watts' article
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A ceasefire between the Ugandan government and the so-called Lord's Resistance Army rebels came into force today.
But is the stance of the government here putting the chance of any lasting solution in jeopardy? Britain continues to demand that the LRA's leader Joseph Kony is handed over to the International Criminal Court.
How big a problem is that? We' re investigating.
And a year after the US's worst ever hurricane, we speak to Michael Brown, the federal emergency chief who became the fall guy for Washington's inept handling of the aftermath.