The world sometimes seems like a really small place – with just a click of a mouse we can be on a video call with a friend across the world. Or in less than a day, we can get on a plane and be on the opposite side of the globe.
But even though the world feels small, there are still almost 200 countries in the world – a big number. Is it possible to call every one on Skype? One man, Mark Malkoff, decided to find out. Take a look: