Disaster Documentaries help to educate viewers about tragedy's which have occurred across the world. Of course, these films are normally somber pieces that mix carefully researched archive footage with interviews from people who were part of these events. There are many films that are part of this genre, but which are the six greatest films that will make you fear the earth? Here is the definitive list.

"An Inconvenient Truth"

Al Gore will probably always be remembered as the man who could have put a stop to George W. Bush's reign of terror. However the former vice president hasn't done too bad for himself since "losing" out on election victory with his documentary "An Inconvenient Truth" helping to inform the world about the damage we are doing to the environment. He also has won a nobel prize for his efforts. Bet he doesn't live in a big white house though.

"What In The World Are They Spraying?"

Global warming is of course ruining the world and we are all responsible for the damage. Whether it is because we drive that extra mile we could have walked or sprayed an extra dose of deodorant that we didn't need, we can all work together to save the planet. However in "What in the world are they spraying" we are shown the full effect of big business's efforts to destroy the world. This includes dumping thousands of tons of micronised aluminum across the globe which is having an horrific effect on our landscape.

"An Alfred Hitchcock Documentary On The Nazi Holocaust"

The Nazi's barbaric actions throughout their tenure at the head of German politics was so devastating that it left the world a more horrific place. The British Government decided to send in their most prized director, Alfred Hitchcock, to capture some prized footage of the concentration camps where most of the prisoners were murdered but when he showed them what he had filmed they deemed it too grisly for release.

"The Chernobyl Disaster - SFD Documentary"

Nuclear annihilation is what causes many people to stay awake in fear throughout the night. TV programs and films like "Threads," "Dr Strangelove" and "Miracle Mile" have implanted the theory that we are all going to die a slow, painful and radiated death through a catastrophe like this in many peoples minds. However "The Chernobyl Disaster" shows off the true effects of such a disaster whilst also informing us of the massive mistakes that led to the meltdown. Harrowing viewing. 

"Krakatoa - The Last Days"

The BBC spent £2.3 million on the reconstruction of the last days of Krakatoa. 75% drama and 25% documentary this extraordinary piece wonderfully documents the terrifying events of the day when the eruption of the volcano was heard over 5,000 miles away and released som many different gases into our atmosphere that it would change the world drastically.

"Children of the Tsunami"

One of the most recent catastrophes to occur on the globe was the tsunami which massacred the coasts of Japan on March 11th 2011. Yet with the devastating consequences being so large in their scale it is often forgotten about the personal strife that occurs because of these events. This documentary looks at the disaster through the eyes of 7-10 year old survivors and will leave you weeping uncontrollably come the documentaries conclusion.