2. Fukushima earthquake and tsunami (Pt.1)

In March 2011, Japan was hit by a devastating tsunami killing 20,000 and triggering a nuclear meltdown. Survivors and witnesses tell their extraordinary stories.

3. Fukushima earthquake and tsunami (Pt.2)

The tsunami provokes a major meltdown at the local nuclear facility. What happened to the safeguards? What went wrong at Fukushima?

4. Chernobyl nuclear disaster (Pt.1)

In April 1986, a huge explosion at Chernobyl blasted radioactive dust into the atmosphere

5. Chernobyl nuclear disaster (Pt.2)

Chernobyl left wreckage that will be radioactive for 20,000 years. But what caused it?

6. Air France Concorde crash

On the 25th July 2000, a Concorde leaving Paris for New York caught fire on take-off before crashing to the ground. But why? Investigators and loved ones recall the tragedy.