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Will the U.S. Finally Get a Unified Power Grid?

The long-delayed Tres Amigas superstation would help move up to 20 gigawatts of electricity around the continent

4 min read
Illustration: Elias Stein
Illustration: Elias Stein

It is a decades-old dream: a single, vast North American electric grid, from the Atlantic to the Pacific, from Mexico to the Arctic Circle. Such a continent-wide supergrid would let officials transmit the tens of gigawatts of wind-generated power from the Great Plains to cities on both coasts. It would let Pacific Northwest hydropower flow to Chicago and let Texas wind power find its way to Massachusetts, Mississippi, and Montana. The benefits, measured in financial and reliability terms, would be fantastic. And yet despite many studies and even several attempts to create such a grid, it has never been achieved. The technology and the political will have been lacking.

In 2016, though, engineers will make a major stride in the former. An ambitious project known as Tres Amigas, eight years in the making, is finally getting under way. Eventually it will link the three largest North American grids: the Eastern Interconnection, the Western Interconnection, and the Texas Interconnection, which together cover the lower 48 states plus 8 Canadian provinces. Tres Amigas, located in eastern New Mexico, where the three grids converge, will be a transmission “superstation,” able to transfer up to 20 gigawatts of electricity in almost any direction.

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For Better or Worse, Tesla Bot Is Exactly What We Expected

Tesla fails to show anything uniquely impressive with its new humanoid robot prototype

15 min read
A humanoid robot with metal and wires exposed stands on stage.

Elon Musk unveiled the Optimus humanoid robot at Tesla's AI Day 2022.

Tesla

At the end of Tesla’s 2021 AI Day last August, Elon Musk introduced a concept for “Tesla Bot,” an electromechanically-actuated, autonomous bipedal “general purpose” humanoid robot. Musk suggested that a prototype of Tesla Bot (also called “Optimus”) would be complete within the next year. After a lot of hype, a prototype of Tesla Bot was indeed unveiled last night at Tesla’s 2022 AI Day. And as it turns out, the hype was just that—hype.

While there’s absolutely nothing wrong with the humanoid robot that Musk very briefly demonstrated on stage, there’s nothing uniquely right, either. We were hoping for (if not necessarily expecting) more from Tesla. And while the robot isn’t exactly a disappointment, there’s very little to suggest that it disrupts robotics the way that SpaceX did for rockets or Tesla did for electric cars.

You can watch the entire 3+ hour livestream archived on YouTube here (which also includes car stuff and whatnot), but we’re just going to focus on the most interesting bits about Tesla Bot/Optimus.

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"Nothing About Us Without Us"

Assistive technologies are often designed without involving the people these technologies are supposed to help. That needs to change.

3 min read
A photo of two people holding signs outside.  One is in a wheelchair.
Erik McGregor/LightRocket/Getty Images

Before we redesigned our website a couple of years ago, we took pains to have some users show us how they navigate our content or complete specific tasks like leaving a comment or listening to a podcast. We queried them about what they liked or didn’t like about how our content is presented. And we took onboard their experiences and designed a site and a magazine based on that feedback.

So when I read this month’s cover story by Britt Young about using a variety of high- and low-tech prosthetic hands, I was surprised to learn that much bionic-hand development is conducted without taking the lived experience of people who use artificial hands into account.

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Exploring the Value of Power Modules

Learn how power modules can reduce power supply size, EMI, design time, and solution cost

1 min read
Texas Instruments

In this training series, we will discuss the high level of integration of DC/DC power modules and the significant implications that this has on power supply design.

Watch this free webinar now!

In addition to high power density and small solution size, modules can also simplify EMI mitigation and reduce power supply design time. And thanks to improved process and packaging technology, a power module may even provide all of these benefits with a lower overall solution cost as well.

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