September 11th, 2001: The world stops as America is hit by a catastrophic attack. Almost three thousand people die, thousands more are injured. How could a terror attack of this scale happen? English

In 1937, the Hindenburg airship spectacularly exploded. The horrifying crash of the largest man-made object ever to take to the skies was captured on film and sealed the fate of airship travel forever.

On November 22nd 1963, president John F. Kennedy was shot dead in front of crowds of well-wishers. Now in-depth analysis, investigative reports, and declassified documents expose crucial errors.

Two planes crashed just five months apart in almost identical circumstances. All 346 on board were killed. In both cases, it was the same plane, the new Boeing 737 Max.

The Deepwater Horizon oil spill is one of America's biggest environmental disasters with entire communities wiped out as a result. We reveal ten critical mistakes that ultimately led to the disaster.