What is a year? A simple question, but with no simple answer. Basically, a year is a time span measured by the orbit of the earth around the sun. But beginning when? And ending when? And how sub-divided?

Perhaps you saw the brief article in The Tuscaloosa News on Wednesday, December 19, 2012, reporting that gunmen had shot dead five female health workers who were immunizing children against polio in Pakistan. Pakistan is one of three countries where […]