Presented by Arthur H. Robinson in 1963, it is a modified cylindrical projection that is neither conformal nor equal-area. Central meridian and all parallels are straight lines; other meridians are curved. It uses lookup tables rather than analytic expressions to make the world map look right.
The projection was originally developed for use by Rand McNally and is currently used by the National Geographic Society.
This projection has advantages but also disadvantages. First of all, it shows an overall picture of the world. Also, the sizes and western edges are accurate and outlines of continents. The one disadvantage is its disortion of polar areas.