Curated Video
Ordnance Survey Maps
Ordnance Survey has been creating maps for hundreds of years. How have their mapping methods changed since the first Ordnance Survey maps were made? Human Geography - Orientation And Settlements - Learning Points. The British Ordnance...
Tom Scott
The Concrete Pillars On Top Of British Hills: Trig Points
http://tomscott.com - http://twitter.com/tomscott - Around the United Kingdom there are odd concrete pillars on the top of hills, built to last for decades if not centuries. They've got a cryptic marking on them, and the words "Ordnance...