All that pressure keeps the metal in the inner core in solid form, despite its extremely high temperature. Recent scientific studies lead experts to believe that Earth's inner core is approximately 10,800Âº F â or about the same temperature as the surface of the Sun!
The New York City Police Department (NYPD) is the largest police department in the United States, with 32,284 officers as of 2009, and serving the combined populations of the Bronx, Brooklyn, Manhattan, Queens and Staten Island.
A chief of police or commissioner heads many big-city police departments nationwide. New York City, for example, has a commissioner leading its police department. The New York Police Department's commissioner, though, isn't a sworn law enforcement officer but a civilian administrator appointed by the city's mayor. Overall, the NYPD police commissioner leads a department of more than 34,000 officers, including a uniformed chief of the entire force.