21 October 2011 Last updated at 09:50 ET

The world at seven billion

How is the changing global population affecting people's daily lives? With the UN set to announce that there are now seven billion people on the planet, BBC News reporters spoke to seven people from around the world to hear their stories.

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Production: Anna-Marie Lever, Fiona Crack, John Galliver, Emily Jones. Design: Mick Ruddy, Claire Shannon. Development: Martyn Rees.

Over the next week the BBC News website will be looking at the issues raised by the growth in the world's population. You will be able to find out how many people were alive on the day you were born, plus there will be an analysis of the troubled history of population control as well as a tour of population projection data.

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