Tuberculosis (TB) Tuberculosis (TB) Active tuberculosis (TB) is very contagious. The World Health Organization (WHO) estimates that one-third of the world's population is infected with the bacteria that cause TB.
With an average elevation of 6,800 feet, Colorado is the highest state in the United States. A mountain lake outside of the skiers dreamland of Aspen, Colorado. The US is bordered to the north by Canada and Mexico to the South. With 50 states of varied sizes, US is considered the largest nation in America.
It may seem strange, but the highest elevation surface in Indiana (1,257 feet above sea level) is on the southern extremity of the Tipton Till Plain in northern Wayne County. The hilltop that attains this elevation is, however, unimpressive as a vantage point from which to view the surrounding countryside.