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Robert Ripley and the ‘Believe It or Not’ empire

During the Great Depression, cartoonist Robert Ripley made millions from freaky facts

• 9 mins

Klaus Fuchs: Oppenheimer’s atomic spy

In 1950, Klaus Fuchs admitted passing top secret nuclear secrets to the Soviet Union

• 9 mins

Creating Alexa

In 2000, two Polish students started creating a smart speaker which sounded human

• 9 mins

Marie Kondo

In 2011, Japanese tidying expert Marie Kondo's first book was published.

• 9 mins