So, strike Europe off the list – are there in fact six continents, not seven? Maybe – but as the New York Times points out, once you start with this reasoning, it can be difficult to stop.

There are seven continents on Earth, or so we learned in school. But it turns out that these designations are not as straightforward as they seem, and different scientists have different views on ...

The Seven Worlds One Planet crew deployed drones all over the world and in some of the most hostile conditions on Earth, from the icy throws of Antarctica to the scorching deserts of Africa.