The Staten Island Railway rapid transit system solely serves Staten Island, operating 24 hours a day. The Port Authority Trans-Hudson (PATH train) links Midtown and Lower Manhattan to northeastern New Jersey, primarily Hoboken, Jersey City, and Newark. Like the New York City Subway, the PATH operates 24 hours a day; meaning three of the six rapid transit systems in the world which operate on 24-hour schedules are wholly or partly in New York (the others are a portion of the Chicago 'L', the PATCO Speedline serving Philadelphia, and the Copenhagen Metro).
How many 24-hour rapid transit systems are located in New York?
three

The scope of the term "post-punk" has been subject to controversy. While some critics, such as AllMusic's Stephen Thomas Erlewine, have employed the term "post-punk" to denote "a more adventurous and arty form of punk", others have suggested it pertains to a set of artistic sensibilities and approaches rather than any unifying style. Music journalist and post-punk scholar Simon Reynolds has advocated that post-punk be conceived as "less a genre of music than a space of possibility", suggesting that "what unites all this activity is a set of open-ended imperatives: innovation; willful oddness; the willful jettisoning of all things precedented or 'rock'n'roll'". Nicholas Lezard, problematizing the categorization of post-punk as a genre, described the movement as "so multifarious that only the broadest use of the term is possible".
Who does music critic Stephen Thomas Erlewine work for?
AllMusic

Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea.
What are two main groups prokaryotes can be divided into?
Bacteria and Archaea