The stratosphere, mesosphere and lowest part of the thermosphere are collectively referred to as the middle atmosphere, which spans heights from approximately 10 kilometres (33,000 ft) to 100 kilometres (62 mi).
Terrell, Texas. Not to be confused with Terrell County, Texas. Terrell is a city in Kaufman County, Texas, United States. As of the 2010 census, the city population was 15,816. Terrell is located 32 miles (51 km) east of Dallas.
Allan B. Polunsky Unit Polunsky Unit is a maximum security prison located in Livingston Texas, part of Polk County. The facility opened as the Terrell Unit, and was later renamed after the former chairman of the Texas Board of Criminal Justice Allan B. Polunsky.