Map Projections

Map projections is something you either don't have to care about or you have care about a lot...there really is no middle ground anymore. Most of the time ArcGIS handles everything automatically and we don't have to know anything - magically things are properly georeferenced and aligned. Until you run into issues...things don't align, buffers are incorrect, and distances don't make sense. Here are two useful websites to learn more about map projections:

• Map Projections (by C.A. Furuti)
• A Gallery of Map Projections (by P.B. Anderson)