1. Japan's Nuclear Nightmare

6.5

. 11 March 2012. 45 min

On 11 March 2011, a massive earthquake and tsunami off Japan’s coast caused a meltdown at the Fukushima Nuclear Power Plant.

2. Bismarck

8

. 18 March 2012. 45 min

Maritime Historian Andrew Lambert looks at the Royal Navy's battle with the German battleship Bismarck.

3. Mountain Tsunami

8.5

. 25 March 2012. 45 min

In 1963 a landslide from Monte Toc into the reservoir of the Europe's highest dam caused a giant flood wave that destroyed the village of Longarone and other villages, claiming over 2,000 lives.

4. Waco Cult

7

. 1 April 2012. 45 min

After a 51-day siege at the ranch of an armed religious cult, the FBI tries to force people out with tear gas, but a fire breaks out and almost 80 people die.

5. Deepwater Horizon

7

. 15 April 2012. 45 min

A look at the series of decisions and mistakes that led to the world's largest oil spill disaster, and that 11 workers on the rig died.

6. Massacre in Mumbai

8

. 22 April 2012. 45 min

On 26 November 2008, terrorists attacked two luxury hotels (one of them the famous Taj Mahal Hotel), a Jewish educational center, a café and a train station in Mumbai, killing 166 people.