It’s easy to take maps for granted. After all, most of us have a pretty good map in our pockets at all times, ready to show us how to get anywhere on the globe. But to make a map useful, you have to ...
Casual Navigation on MSN
How ships navigate a sphere, the math and maps behind great circle routes
On a flat chart, the shortest ocean route looks like a curve, but that's just a trick of the map projection. Here's how ...
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