Use of Mass Transit Is Highest in Nearly 60 Years

environment – n. all surrounding things, conditions and influences that affect life; the natural world of land, sea, air, plants and animals

expansion – n. the act of becoming bigger or of making something bigger

millennial - n. a person born in the 1980s or 1990s

subway - n. a system of underground trains in a city

transit – n. vehicles that move persons or things from one place to another