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.

Get in touch with Fast Track via email or Facebook. And follow us on Pinterest.

Watch Fast Track on the BBC World News channel on Saturdays at 04:30, 13:30 and 19:30 GMT or Sundays at 06:30 GMT.