The early skyscrapers were inspired by the idea of turning steel train bridges on their sides. This episode of 99% Invisible explains.
And it was actually a small-lot urban infill project that ushered in the age of steel-framed skyscrapers.
"There are rules that dictate what you can build and how. Rules of physics and rules of men who sit on various bureaucratic boards and bodies. These rules dictated that if silk magnate John Noble Stearns wanted to build one of those ten story towers that were all the rage in 1888, on his 22 foot wide lot, he would need to build walls of stone and brick that were 5 feet thick. With tiny windows. Which left room for an interior that was only 11 feet wide. Slice off a few feet for a hallway. A few for a bathroom. A couple for a coat closet. Another for some filing cabinets and an umbrella stand. And he would be asking his well heeled tenants to work in a dark cell better suited to monks illuminating manuscripts.
Stearns asked the best architects in the northeast for a solution. They all told him it couldn't be done. Everyone except Bradford Gilbert."
FULL STORY: Episode 27- Bridge to the Sky

Rethinking Redlining
For decades we have blamed 100-year-old maps for the patterns of spatial racial inequity that persist in American cities today. An esteemed researcher says: we’ve got it all wrong.

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

California High-Speed Rail's Plan to Right Itself
The railroad's new CEO thinks he can get the project back on track. The stars will need to align this summer.

San Francisco Muni Raises Fares a Second Time
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Electric Grid Capacity Could Hamstring EV Growth
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Texas Bill Supports Adaptive Reuse in Commercial Areas
Senate Bill 840, which was preliminarily approved by the state House, would allow residential construction in areas previously zoned for offices and commercial uses.
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