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The Columbine massacre

13 people were killed and more than 20 injured in the school shooting on April 20th 1999

• 8 mins

Nato bombs Serbian TV

A survivor from the April 1999 bombing in Belgrade that killed 16 people.

• 9 mins

Britain's first vegans

The Vegan Society was established in 1944 by British 'non-dairy vegetarians'

• 9 mins

South Africa's first free elections

After Apartheid all South Africans regardless of race finally won the right to vote.

• 10 mins

Sri Lanka: A journalist's editorial from the grave

The assassination of newspaper editor, Lasantha Wickramatunga, in 2009 shocked the world

• 10 mins

The al-Yamamah arms deals

A record series of arms sales by the UK to Saudi Arabia began in the 1980s

• 9 mins

Ellen comes out

Ellen DeGeneres came out as a lesbian on primetime American television in April 1997.

• 9 mins

Rupert Brooke

The English poet whose death at the start of World War One was mourned by millions

• 9 mins

The Arctic African

Why a boy ran away from West Africa to live in the Arctic in the 1960s.

• 9 mins

The sinking of the Belgrano

The Argentine ship was sunk by a British submarine during the Falklands war

• 9 mins

The Malayan Emergency

The struggle against a Communist insurgency in Malaya in the 1950s

• 9 mins

Jack Ma: The founder of Alibaba

The Chinese billionaire set up his online shopping site in 1999

• 9 mins

The siege of Dien Bien Phu

The French surrender at the siege of Dien Bien Phu ended their colonial rule of Vietnam

• 9 mins

The Bauhaus

The groundbreaking school of art and design was founded in 1919

• 9 mins

The war on drugs

The first 'war on drugs' was launched by US President Richard Nixon in 1971.

• 9 mins

Strictly Come Dancing

One of the most successful TV formats in the world started back in May 2004

• 9 mins

The Karakoram highway

The road between Pakistan and China took 20 years to complete

• 9 mins

Predicting the financial crash

The economists who predicted the 2008 financial crash but whose warnings were ignored

• 9 mins

The final days of Sri Lanka's civil war

How the army finally crushed Tamil Tiger rebels after 25 years of bloody civil war

• 9 mins

China's One Child policy

The Chinese Communist Party started ruthlessly enforcing birth control in the early 1980s

• 9 mins

Hitler's stolen children

During WW2 the Nazis abducted blonde blue-eyed children to build an Aryan master race

• 9 mins

Walking the Great Wall of China

Three friends set off on an epic trek along the Great Wall of China in May 1984

• 9 mins

The asteroid that killed the dinosaurs

The Chicxulub impact crater was discovered in 1978.

• 9 mins

Fighting Uganda's anti-gay laws

When MPs tried to toughen the laws against homosexuality, LGBT activists took a stand.

• 9 mins

How environmental campaign group Greenpeace was formed

The story of how environmental campaign group Greenpeace was formed

• 9 mins

The Acid Survivors Foundation

The Bangladesh charity dedicated to treating the survivors of acid attacks.

• 9 mins

The death of Jawaharlal Nehru

The man who led India to independence died on May 27th 1964

• 9 mins

Bokassa's massacre of the children

How protests by young people led to Jean-Bédel Bokassa's fall from power in C.A.R

• 9 mins

Tiananmen Square escape

Dan Wang was the most wanted student leader after the Tiananmen Square crackdown in 1989.

• 9 mins

Behind the scenes on Sesame Street

The inside story of one of the most popular children's TV shows ever made

• 9 mins