1. Find a radio station that broadcasts the 'GMT (Greenwich Mean Time) pips' on the hour, giving the time at the Prime Meridian. 2. Construct a device to work out local noon, like a north-south line.

Once a month, Life & Arts taps into the many questions received and answered by the staff of the Columbus Metropolitan Library. A sampling: A: The latitude represents an imaginary line drawn ...

After creating a global map of historical imagery density last week, we have been experimenting with higher resolution versions for a small area. High resolution historical imagery density Latitude 0° ...