When we watched the video of The Long Way Down (see my post from way back in January if you don't remember), when Charlie and Ewan crossed the border they did an experiment about how water drains. All you readers in the northern hemisphere, go flush your toilets. You can see that the water spirals down in a clockwise direction. And all my friends back in Maputo who do the same thing can see water disappear in a counter-clockwise direction. This is called the Coriolis effect. At the equator, there are guys just waiting with water and a small bowl with a hole in the bottom to show you how this works. Two things are really cool about this experiment. First of all, you only need to be 20m north or south of the equator to see the spin operate in each different direction. And most cool of all, when you are actually exactly on the equator there is no spin at all. Water drains without any twirling. We took our own video of the experiment. It is not as good quality as the motorcycle guys, but you can watch it anyway if you want.