This DIY Bipedal Robot Used Pneumatic “Air-Muscles” Instead of Motors
This DIY Bipedal Robot Used Pneumatic “Air-Muscles” Instead of Motors

In 1987, Richard Greenhill, a British photographer who was fascinated by (but had no actual training in) robotics, decided he wanted to build a life-size humanoid that could do useful things, like carrying luggage. He was working at a startup called I…

The Forgotten History of Hershey’s Electric Railway in Cuba
The Forgotten History of Hershey’s Electric Railway in Cuba

Why does a chocolatier build a railroad? For Milton S. Hershey, it was a logical response to a sugar shortage brought on by World War I. The Hershey Chocolate Co. was by then a chocolate-making powerhouse, having refined the automation and mass produc…

The ’80s Submersible That Transformed Underwater Exploration
The ’80s Submersible That Transformed Underwater Exploration

As a kid, I loved the 1980s aquatic adventure show Danger Bay. True to the TV show’s name, danger was always lurking at the Vancouver Aquarium, where the show was set. In one memorable episode, young Jonah and a friend get trapped in a sabotaged mini-…

This Power Grid Pioneer’s EV Prediction Came 100 Years Too Soon
This Power Grid Pioneer’s EV Prediction Came 100 Years Too Soon

Charles Proteus Steinmetz was a towering figure in the early decades of electrical engineering, easily the intellectual equal of Thomas Edison and Nikola Tesla—men he considered his friends. One of Steinmetz’s most significant achievements was to quan…

The Project G Stereo Was the Definition of Groovy
The Project G Stereo Was the Definition of Groovy

Dizzy Gillespie was a fan. Frank Sinatra bought one for himself and gave them to his Rat Pack friends. Hugh Hefner acquired one for the Playboy Mansion. Clairtone Sound Corp.’s Project G high-fidelity stereo system, which debuted in 1964 at the Nation…

How the Dictaphone Entered Office Life
How the Dictaphone Entered Office Life

Thanks to Hollywood, whenever I think of a Dictaphone, my imagination immediately jumps to a mid-20th-century office, Don Draper suavely seated at his desk, voicing ad copy into a desktop machine. A perfectly coiffed woman from the secretarial pool th…