As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The Equator is a line of latitude that bisects the globe at its widest point, and where the hours of light and darkness are equal throughout the year. The Equator passes through 13 countries ...

These are the lines of latitude and longitude. The main line of latitude is the Equator, located at zero degrees latitude, halfway between the North and South Poles. North of the Equator is the ...