Investigative documentary. A year-long look at the lives of three young revolutionaries as their differing visions for the new Egypt collide following 2011's Arab Spring.

Investigative documentary. A look at 2011's tsunami that swamped Japan's Fukushima nuclear plant, making 100,000 people homeless and causing nuclear meltdown and a radiation leak.

Investigative documentary series. Following the lives of three people in rural China as their tiny farming community is transformed by a massive government urbanisation project.

Investigative documentary series. This World explores Interviews before Execution, an extraordinary Saturday night talk show in China which interviews prisoners on death row.

International investigative documentary series. John Sweeney investigates Mormonism, the belief system of Mitt Romney, the potential Republican candidate for the 2012 US election.

This World tells the story of the 2011 massacre in Norway, offering insight into the life and mind of the perpetrator, Anders Breivik, and exposing the hatred that inspired him.

Decades of clerical abuse and cover up have left the Catholic church in Ireland at breaking point. Now Darragh MacIntyre reveals new evidence of a scandal that goes to the very top of the Irish church.

Documentary which captures the moment when the Nobel Prize-winning dissident Aung San Suu Kyi took the huge, risky step into everyday politics in Burma.

With days to go before the US presidential election, Andrew Marr assesses Barack Obama's first term in office, talking to those who have worked closely with him in the White House.

Simon Reeve heads to Cuba to find a communist country in the middle of a capitalist revolution and asks if the new economic openness could lead to political liberalisation.

Investigative documentary series. Paul Mason travels to Spain to examine how a once thriving economy became the latest casualty of the Eurozone crisis.