Most EV Charging Stations Are Not Really the Charger
For Level 1 and Level 2 charging, the box on the wall mostly delivers power safely. The real AC-to-DC charger is inside the car.
EDU Short
One Step or Two? Your Body Disagrees With the Physics Shortcut
Taking stairs two at a time burns more per minute, but one step at a time can burn more across the full staircase.
The Brooklyn Bridge Was Saved by Overengineering
A corrupt wire supplier smuggled bad steel into the Brooklyn Bridge. The reason the bridge survived is the safety margin John and Washington Roebling built into it.
Why Your Watch, Phone, and Ring Count Different Steps
Step counters do not really count footsteps. They infer them from motion, body position, and algorithms that disagree more than users expect.
New York's First Subway Was a Pneumatic Tube Under Broadway
Alfred Ely Beach built a secret air-powered subway under Broadway more than a century before the Hyperloop became a tech-world fantasy.
Why the Long Way Around Can Be the Fastest Route
UPS avoids left turns to save fuel and reduce risk. Manhattan's one-way grid often forces drivers into the same counterintuitive logic.
The Brooklyn Brownstone That Is Really a Subway Vent
58 Joralemon Street looks like a Brooklyn Heights townhouse. Inside, it is part of the subway system.
The Skyscraper Feud That Gave New York the Chrysler Building
William Van Alen and H. Craig Severance turned a broken partnership into the race between the Chrysler Building and 40 Wall Street.
New York Replaced Payphones With Wi-Fi Kiosks and a Privacy Fight
LinkNYC promised free calls, free Wi-Fi, and a cleaner public network. It also turned the payphone's replacement into a debate over data, advertising, and 5G towers.
The Manhattan Project Left Radioactive Footprints in New York
Before Oak Ridge and Los Alamos became famous, the atomic bomb project had offices, warehouses, and university labs hidden in New York City.
The Iron Boot Scrapers Left From New York's Horse Era
Before cars filled New York's streets, horses created a sanitation problem so ordinary that it shaped stoops, sidewalks, and front doors.
Those Silver Sidewalk Boxes Help Protect New York's Pizza Water
New York's water reputation starts in the mountains, but it is guarded on the sidewalk by 965 cast-iron sampling stations.