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.
Mount Mitchell is the highest peak in the state, and at 6,684 feet, it is also the tallest mountain in the eastern United States.t. Mckinley is the highest mountain in America (Alaska) standing at 20,320 feet (6,194 m) above sea level. However in the northern territories Mt. Whitney stands the tallest at 14,505 feet (4,421 m) above sea level.