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How Many People Can Live On Planet Earth

In a Horizon special, naturalist Sir David Attenborough investigates whether the world is heading for a population crisis.In his lengthy career, Sir David has watched the human population more than double from 2.5 billion in 1950 to nearly seven billion. He reflects on the profound effects of this rapid growth, both on humans and the environment.While much of the projected growth in human popu

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How Mad Are You?

Take ten volunteers, half have psychiatric disorders, the other half don't - but who is who?Over five days the group are put through a series of challenges - from performing stand-up comedy to mucking out cows. The events are designed to explore the character traits of mental illness and ask whether the symptoms might be within all of us.Three leading experts in mental health attempt to spot w

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How Long Is A Piece Of String

Alan Davies discovers that answering that question is much harder than he originally thought after visiting mathematician Marcus du Sautoy to help him find an answer. However, this creates more questions, which requires a trip to a place dedicated to measurement, the National Physics Laboratory. Finding out the exact length of the string proves even more troublesome when Marcus proposes the string

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How large is the Universe?

Cosmologists discuss their project to create a map of everything in existence, and reveal that their research has yielded some highly unexpected results, creating a picture stranger than anything they had imagined. Scientists also explain why the map suggests the universe may not be an all-encompassing entity - but merely the starting point for something much bigger.

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How Hackers Steal Your ID

They've got your name, they know where you live and once they've got your bank details they have you. In this age of modern technology hacking has become a big concern for many of us as they have stolen information from millions of us located all across the globe.For some time hackers have been taking full advantage of any flaws discovered in critical systems, many of we

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How Hackers Changed the World

Storyville: Documentary that goes inside the complex network and history of Anonymous, the radical online 'hacktivist' collective. Through interviews with current members - some recently returned from prison, others still awaiting trial - as well as writers, academics and major players in various 'raids', the film traces the collective's breathtaking evolution from merry pranksters to a full-blown

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How Facebook Changed The World: The Arab Spring

The is the story of how the Arab world erupted in revolution, as a new generation used the internet and social media to try to overthrow their hated leaders.This film reveals that ancient truism of insurgency may now be obsolete. And that’s because in one sense the television station has already been taken before the first brick has even been thrown, distributed into the mobile phones in everyon

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How Drugs Work: Cocaine

Documentary combining compelling real-life stories and stunning computer graphics to explore how cocaine creates its highs and its lows.Cocaine, once a drug exclusively for the rich and famous, is now the most popular class A drug in Britain, with more than 1.2 million people taking it in the UK in 2009. The film follows three users on nights out on coke and uses cutting-edge computer graphics t

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