Sports medicine doctors treat athletes and other performers who may suffer injuries through physical activity. The educational requirements for becoming a sports medicine doctor include extensive graduate schooling.
Ground Zero originated as a term to describe the site of a nuclear explosion and later was used to refer to the point of any dramatic or violent event. 1  Remembrance: A view of the World Trade Center North Tower memorial pool at the National September 11 Memorial and Museum in New York today.
Most people know that it is colder on top of a mountain compared to the ground, but few actually know why. And even less know that the atmosphere actually warms up again! The true temperature profile of the atmosphere is shown in the image. The air at the surface up to around 10 kilometers is called the troposphere.