Documentaries

Ukraine is second only to Russia in having the highest infection rates in Europe. Lucy Ash travels to Kyiv and Odessa to see why fighting HIV is so difficult in Ukraine.

Sarfraz Manzoor tells the story of the African American cowboys. How did they get airbrushed out of movies and history books?

Simon Cox finds out from employees and executives at the now defunct Laiki Bank how billions handed out in bad loans created a financial time-bomb.

Penny Dale travels to Tanzania to explore the state of science and technology in one of Africa's poorest countries – through the eyes of its female scientists.

Informants play a key role in the US justice system. But there are few regulations about how ‘snitches’ are used. Assignment investigates the growing calls to reform the system.

The music of refugee camps of the Saharawi people in Algeria and their efforts to bring their forgotten plight to international attention with a new studio in the desert.

As the number of cars on the road increases, how can they be developed to prevent global gridlock and increased pollution? Theo Leggett investigates.

How an internet dance craze has become a sometimes violent battleground between conservatives and liberals in Tunisia. Neal Razzell reporting.

Will a sophisticated revolution in online teaching - from the best universities on the planet - meet the shortage of higher education across the world?

People with ideas flock to Silicon Valley, where innovation and invention are celebrated and investors are willing to take a chance on the next big thing.