How does petrol get from well to pump, and why is it so expensive?

If you’ve ever wondered where petrol comes from and why it is *so* expensive, an episode of the BBC’s Bang Goes Theory gives a great explanation.

Image source: Images_of_Money

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TEDx video of 10 key words for engineers

Tim Minshall’s TEDxGranta talk on “Building the Future” is now available from YouTube. This short video covers the main themes of this blog, using examples of crashing space probes, massive mobile phones and, of course, Wallace and Gromit.