Joel Kotkin of Pepperdine University in Los Angeles, author of a forthcoming book on the geography of the information age, sees the favourite cities of the Internet economy, such as San Francisco and Seattle, as boutiques for the young, single and rich.

ECONOMIST: The California housing market: Squeezed out | The

After that, setting falls away sharply for other subjects - for example English (42%), geography (31%) and information technology (19%).

BBC: Setting, streaming - how schools teach

Different sections and articles encourage kids to get to know more about the world around them with incredible information on science, animals, technology, geography, and archaeology.

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