A look at four inventions that shocked the world. Ouija, a game that claims to talk to the dead, Dynamite, an explosive invented to save lives, the electric chair and the rollercoaster.

Meet a young farm worker whose electric idea keeps us entertained, an astronomer who wants to see the birth of stars and an attorney whose copier terrifies governments.

A look at expensive innovations within the world of crime, including an alarm that keeps the crooks at bay, a device that revolutionises retail and a gun loved by bad guys.

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We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.

We don't have an overview translated in English. Help us expand our database by adding one.