1. Riot
2. Civics and citizenship

The internet has become a new battleground in political conflict. This program asks how has computer hacking changed and developed? And how has it been utilised by organised crime?

On September 6th 1901, whilst opening an expedition, President McKinley was shot by Polish anarchist, Leon Czolgosz. McKinley's successor, 42-year-old Teddy Roosevelt, was sworn in within 12 hours. McKinley was the third US president to be assassinated. How did his killer get so close?

On 4 July 1943, General Wladyslaw Eugeniusz Sikorski, Commander-in-Chief of the Polish Army, was flying to the Middle East on a Liberator bomber when it crashed into the sea off Gibraltar. He was very anti-Russian at the time and German propaganda claimed that he had fallen victim to the dirty tricks of the Allied Secret Service.

The trafficking of women and children for prostitution is a global problem. The United Nations estimates that more than one million children are forced into sexual slavery each year. Some of them are trafficked into Australia. This documentary follows former police officer turned private investigator, Chris Payne, as he investigates this shocking crime.

In January 1981 the biggest manhunt in Britain came to an end when the police arrested Peter Sutcliffe, the serial killer dubbed the Yorkshire Killer. Over five years Sutcliffe murdered thirteen women claiming it was a divine mission to rid the world of prostitutes.

The residents of the low-lying Carteret Islands have the sad claim to be the planet's first climate change refugees. At certain points, the sea has advanced 50 metres inland, uprooting coconut trees and even splitting one of the islands in two.

On June 25, 2006 a Palestinian resistance force in Gaza crawled out of a tunnel and attacked an IDF tank. Two Israeli soldiers were killed and Gilad Shalit was captured and taken to Gaza. The Prime Minister, Ehud Olmert, refused to negotiate with the captors for his release and pursued aggressive retaliations. This documentary picks up two years later, with Gilad still in captivity, and examines the events that followed the capture. Over 600 Palestinians were killed in a large scale retaliatory operation, in the first three months.

A group of Serbian nationalists were determined to kill the heir to the Austro-Hungarian throne. Two of the assassins had bombs and one had a pistol. The Archduke and his wife were mortally wounded. The events of that day on Sunday 28 June led to the outbreak of World War I.

Ninety five per cent of the world's pearls are born in China, which supplies almost all the pearl growing nuclei to pearl farms around the world. This episode takes us to China and Polynesia, where Chinese pearl technicians are in great demand.

In October 2002, Fatemeh Saharkhizan, wife of one of Iran's biggest football stars, Nasser Mohammad-Khani, was found murdered in her bedroom. Mohammad-Khani's mistress Khadijeh Jahed (Shahla), became the prime suspect and was arrested a year later. She was charged and held after confessing to the murder whilst in police custody. But serious inconsistencies have arisen, including the fact that the victim was raped. This film follows Shahla's trial.

Insight into the life of Dennis Nilsen who was London's most macabre serial killer, who preyed on the lost and the vulnerable. He murdered fifteen men without the police realising a killer was at large.

On 9 October 1934, just after King Alexander of Yugoslavia had arrived in France, a man jumped onto the running board of the King's car and opened fire. In the confusion, the King accidentally bled to death in his car because his aides failed to apply a tourniquet.

A French scientific mission in the Mediterranean explores two important deep underwater sites.

What does the future hold? Obama's America is a two-part BBC series marking President Barack Obama's first year in office. On inauguration day 2009, the new president studied the "gathering clouds and raging storms" that threatened his nation and declared unequivocally, "we are in the midst of a crisis." A year on as President Obama wrestles with a daunting array of challenges on the world stage and a reeling economy at home, historian Simon Schama looks to American history to understand what is at stake and what the future might hold.

The second and final part of our in-depth look at Barak Obama's first year in office. As the President wrestles with a daunting array of challenges on the world stage and a reeling economy at home, historian Simon Schama looks to American history to understand what is at stake and what the future might hold.

Take a chilling journey to Snowtown, the South Australian town where one of the world's most heinous crimes took place. A serial killing truly unique to all others for one reason - the perpetrators believed they were doing the right thing.

On 17 July 1918, Tsar Nicholas II and his entire family were murdered and buried in a nearby wood. For more than seventy years their whereabouts was unknown, but new material released from Russia now conclusively reveals their fate.

A huge construction project is under way to widen the Panama Canal which is close to suffocating with the growth of global sea traffic.