Page last updated at 07:23 GMT, Monday, 15 October 2012 08:23 UK

Which direction does water drain at the equator?


Does the direction water drains away down a plughole really change according to which side of the equator you are on?

Fiona Foster goes to the equator to put what is known as the Coriolis effect to the test by walking between the northern and southern hemispheres. But is what she sees for real or a bit of scientific trickery to please tourists? Judge for yourself.

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