Those of us who frequent APOD know all about beautiful pictures of celestial objects, but as these videos from the BBC documentary Britain from Above show, sometimes looking down can have its own rewards...

Here's how the air, ground, data, landline, cellphone, and sea ship traffic looks from space in Great Britain, one of the busiest countries on Earth. The Britain from Above documentary took satellite and air images and mixed it with 3D GPS data to create these breathtaking high resolution pictures and videos. I've just embedded a couple of videos here, but check out the others at the BBC site.