Since commercially available 3D printers came out a few years ago, their capabilities have radically expanded. At first, they could only print little things out of plastic, but now people have begun to print working cars and even bridges.

Our Sept. 22, 2017, episode of QDL was decidely techie, covering artifical intelligence, the internet of things, Manufacturing Day, and a cool color-matching tool that uses your smart phone.

What does hailing a ride with Uber have to do with 19th-century geometry and Einstein’s theory of relativity? Quite a bit, it turns out.

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Our August 11, 2017, episode of QDL looked at the role of technology in after-market service, stairs that help you up, Fidget Cubes, and more.

Researchers at Georgia Tech and Emory University have created a device that makes walking up and down stairs easier. They’ve built energy-recycling stairs that store a user’s energy during descent and return energy to the user during ascent.