To pinpoint your position on a map of the world you need to work out your co-ordinates, known as latitude and longitude. Latitude is your position north or south of the Equator. Lines, or parallels, ...

The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to ...

On Oct. 21, 1915, human speech was for the first time converted into electromagnetic waves, crossing the Atlantic between stations in Arlington, Virginia and Paris, France. Two years earlier, in 1913, ...