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BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.

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How We Got to Now with Steven Johnson

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How We Got to Now with Steven Johnson: Episode 4: Light

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Light

Episode 4

Episode 4: Light

BBC Two - How We Got to Now with Steven Johnson, Light

A look at the unsung heroes of invention in the surprising journey from candle to laser.

Documentary series. Steven Johnson discovers the unsung heroes of invention in the surprising journey from the candle to the neon lights of Las Vegas and the world of lasers.

It was only a few centuries ago that the best source of light came from burning oil scooped out of a whale's head. Innovation expert Steven Johnson discovers the unsung heroes of invention in the surprising journey from the candle to the neon lights of Las Vegas and the world of lasers. And he explodes the myth of Thomas Edison's light-bulb moment of innovation.

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BBC Two is a TV channel that started broadcasting on the 20th April 1964.

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BBC Two is a lively channel of depth and substance, carrying a range of knowledge-building programming complemented by great drama, comedy and arts.

Steven Johnson reveals the story behind the ideas that made modern life possible.

A five-part series presented by best-selling author Steven Johnson (Where Good Ideas Come From, Everything Bad Is Good for You), investigating the little-known stories of revolutionary innovations.

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Until 03/01/2009 BBC Two Wales (analogue) was known simply as BBC Two Wales. BBC Two Wales (digital) was BBC 2W. From 03/01/2009 BBC Two Wales schedules on both analogue and digital became identical

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