How the QR code was invented

In 1994 Japanese engineer Masahiro Hara designed a square of data, now known as a QR code

• 9 mins

'Robocops’ in the Democratic Republic of Congo

Handmade robots were installed in DRC's capital city Kinshasa to direct traffic

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The Sunflower Movement

In 2014, more than 500,000 Taiwanese people protested against a new trade deal with China

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The Rose Revolution in Georgia

In 2003, demonstrators stormed the parliament building in Tbilisi, holding flowers

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Fleeing Afghanistan alone as a child

Dr Waheed Arian escaped poverty and war in Afghanistan to begin a new life in the UK

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Dyke and Dryden: Cosmetic kings

In 1969, Dyke and Dryden started one the most successful black British businesses

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Eight years trapped on the Suez Canal in Egypt

After the Six Day War in 1967, 14 ships were stuck on the Great Bitter Lake

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The fight to stop skin lightening in India

In 2013, Kavitha Emmanuel began campaigning to stop skin lightening in India

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I found the first dinosaur remains in Antarctica

In 1986, Argentinian geologist Eduardo Olivero discovered a new kind of Ankylosaurus

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Ethiopia's 1984 famine

In 1984, a news report on a famine in Ethiopia led to a global fundraising campaign

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Bonga Kwenda: Music banned in Angola and Portugal

Outspoken supporter of Angolan independence, Bonga Kwenda was forced into exile in 1972

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My dad created Dungeons & Dragons

In 1974, Gary Gygax created the fantasy roleplay game.

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The creation of Greenwich Mean Time

Experiments by John Flamsteed in the 17th Century led to the time zone being created

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Jean Batten: New Zealand’s record breaking aviator

Jean Batten was nicknamed the Queen of the Skies for her pioneering flights of the 1930s

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The Ken Burns Effect

In 2002, the 'Ken Burns effect' was created.

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Brazil’s electronic voting

In 1996, an electronic voting system in Brazil was used for the first time

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Siegfried and Roy tiger attack

In 2003, illusionist Roy Horn was attacked by a tiger live on stage.

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Iran hostage crisis

In 1979, Barry Rosen was held hostage after the US embassy in Tehran was stormed

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In exile from Iran

Former empress Farah Pahlavi and social scientist Rouhi Shafi speak about leaving Iran

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The Shah of Iran's party

In 1971, the Shah of Iran, celebrated 2,500 years of the Persian Empire

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The woman who saved 2,500 children from the Warsaw ghetto

Polish aid worker Irena Sendler saved 2,500 Jewish children from the Warsaw ghetto in WW2

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The invention of the ‘Baby’ computer

In 1948, the first stored-program computer the ‘Baby’ was invented

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The Pakistan mountain massacre

In 2013, 11 people were killed by members of a militant group at Nanga Parbat base camp

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How Greece got rid of their king

In a 1974 referendum, the Greek people voted two to one in favour of becoming a republic

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India's capsule coal mine rescue

In November 1989, 65 miners were rescued from the Mahabir Coal Mine, in India

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Luana Mansilla: Changing gender aged six

In 2013, the gender of a six-year-old from Argentina was legally changed

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German naturists

The naturist movement began in Germany at the end of the 19th Century

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Iran's secret Christian 'house churches'

Between 2002 and 2005, Naghmeh Panahi set up a network of 'house churches' in Iran

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The Siege of Yarmouk

How the Syrian army turned one neighbourhood near Damascus into a bombed-out wasteland

• 9 mins

Handover of Macau

In 1999, Macau was handed back to China after more than 400 years as a Portuguese colony

• 9 mins