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Subscribe to Nebula and get $20 off at: https://go.nebula.tv/citybeautifulWatch this video on Nebula: https://nebula.tv/videos/citybeautiful-why-us-cities-dont-build-metro-systemsNew York, Boston, Chicago, and Philadelphia built their metro systems over 100 years ago, and since then there hasn't been a big boom in metro construction. Big cities like Houston, Dallas, and Phoenix don't have one. Why not? And should they?Resources on this topic:https://ggwash.org/view/71583/light-rail-heavy-rail-subway-rail-transit-modes-fall-on-a-continuumhttps://www.metro.net/about/rail-modeshttps://journalistsresource.org/economics/bus-versus-rail/https://policy.tti.tamu.edu/strategy/heavy-rail/https://www.cascadepbs.org/politics/2016/10/how-seattle-blew-its-chance-subway-systemhttps://enotrans.org/article/70-year-trend-federal-infrastructure-spending/Produced by Dave Amos and the fine folks at Nebula Studios.Written by Dave Amos.Select images and video from Getty Images.Black Lives Matter.Trans rights. Learn more about your ad choices. Visit megaphone.fm/adchoices