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The Thought Show: Statistics of the Year 2017; YouTube and Child Safety; Sleepwalking

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US reality TV star Kim Kardashian looks at her iPhone. Photo Credit: Karen Minasyan/Getty Images

04/01/2018 GMT

Statistics of the Year 2017; YouTube and Child Safety; Sleepwalking

BBC World Service - The Thought Show, Statistics of the Year 2017; YouTube and Child Safety; Sleepwalking

Statistics of the year 2017; YouTube and child safety; also, why do people sleepwalk?

Statistics of the year 2017 – some surprising facts about the world; YouTube and the number of predators who threaten child safety; also, why do some people sleepwalk?

How many active phone lines are there in the world? How many people die from lawn mowers on average each year in the US? How does this compare to terrorism deaths? Plus, is England densely populated compared to the rest of the world? We speak to Professor Sir David Spiegelhalter about the winners of the Royal Statistical Society’s competition to find numbers reported in the news that surprise us.

An update on what happened after BBC Trending’s investigation on YouTube which revealed the extent of predators on the site. What changes have YouTube made and how did the report affect advertising on the site and its parent company Google?

Why do some of us do bizarre things in our sleep such as riding a motorbike or even driving a car? These are complex behaviours and yet sleepwalkers aren’t aware of what they’re doing and often have no memory of their night-time activities. Neurologist, Dr Guy Leschziner, talks to patients he’s been treating at his sleep clinic at Guy’s and St Thomas’ hospitals in London.

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Statistics of the Year 2017; YouTube and Child Safety; Sleepwalking

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