Abnormal posturing is different from bad posture or slouching.. Instead, it involves holding a body position, or moving one or more parts of the body in a certain way. Abnormal posturing may be a sign of certain injuries to the brain or spinal cord.
Follow @TIME. 1963 was a momentous year in America: President John F. Kennedy was assassinated, Martin Luther King Jr. delivered his âI Have a Dreamâ speech at the March on Washington and, somewhat less heralded by all but the most fervent postal historians, the ZIP code was introduced.
Over the years, a number of potential coding programs had been examined and discarded. Finally, in 1963, the Department selected a system advanced by department officials, and, on April 30, 1963, Postmaster General John A. Gronouski announced that the ZIP Code would begin on July 1, 1963. Preparing for the new system was a major task involving realignment of the mail system.