A few days ago, I posted an update on the Redwood Coast Tsunami Work Group’s Facebook page (https://www.facebook.com/RCTWG/). A magnitude 5.5 earthquake occurred on ...

The Prime Meridian is the imaginary line running between the North and South Poles that's used to indicate 0° longitude. It passes through Greenwich in southeast London, and is therefore sometimes ...

Last June I had the opportunity to fly from Queensland, Australia, to California, USA, experiencing the International Date Line crossing. The IDL is an imaginary line located mostly down the middle of ...

Matt Mohler [Free for All, Jan. 19] states that "the discipline of mathematics differs from most others in its definitiveness." Although I agree that mathematics is definite, I also believe that the ...

On a blustery afternoon, a multinational clot of tourists waited for a turn to straddle some of the most ephemeral notions - time and space. They had come to the Royal Observatory, perched on a steep ...

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, ...