Well, here's something you don't see every day: all 2.75 billion buildings of the world shown together in a single 3D map.

Every map of the world that you have ever seen is inaccurate. Well, of course, you might think. How could they map out the world when it's round, not flat? True. But that isn't the point. See, the ...

A global game reveals that our idea of the size of continents is more accurate than classic maps and their distortions suggest.