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  2. Frost line - Wikipedia

    en.wikipedia.org/wiki/Frost_line

    The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources. For example, snow cover and asphalt insulate the ground and homes can heat the ground (see also heat island). The line varies by latitude, it is deeper closer to the poles.

  3. History of the New York City Subway - Wikipedia

    en.wikipedia.org/wiki/History_of_the_New_York...

    Since the opening of the original New York City Subway line in 1904, various official and planning agencies have proposed numerous extensions to the subway system. One of the better known proposals was the "Second System," which was part of a plan by the Independent Subway to construct new subway lines in addition and take over existing subway ...

  4. List of New York City Subway lines - Wikipedia

    en.wikipedia.org/wiki/List_of_New_York_City...

    The New York City Subway is a heavy-rail public transit system serving four of the five boroughs of New York City. The present New York City Subway system inherited the systems of the Interborough Rapid Transit Company (IRT), Brooklyn–Manhattan Transit Corporation (BMT), and the Independent Subway System (IND). New York City has owned the IND ...

  5. Frost line (astrophysics) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(astrophysics)

    In astronomy or planetary science, the frost line, also known as the snow line or ice line, is the minimum distance from the central protostar of a solar nebula where the temperature is low enough for volatile compounds such as water, ammonia, methane, carbon dioxide and carbon monoxide to condense into solid grains, which will allow their accretion into planetesimals.

  6. Newly discovered fault line blamed for intensity of last ...

    www.aol.com/newly-discovered-fault-line-blamed...

    A newly found fault line with a rare slanted angle shows why an earthquake rattled New York City in April harder than its epicenter in New Jersey — and may be a bigger seismic activity threat ...

  7. List of New York City Subway stations - Wikipedia

    en.wikipedia.org/wiki/List_of_New_York_City...

    A current New York City Transit Authority rail system map (unofficial) The New York City Subway is a rapid transit system that serves four of the five boroughs of New York City in the U.S. state of New York : the Bronx , Brooklyn , Manhattan , and Queens .

  8. Frost line (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Frost_line_(disambiguation)

    In geology, the frost line is the level down to which the soil will normally freeze each winter. By an analogy, the term is introduced in other areas. Frost line (astrophysics), a particular distance in the solar nebula from the central protosun where it is cool enough for hydrogen compounds such as water, ammonia, and methane to condense into solid ice grains.

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