University of Cape Town researchers created the world's first "bio-bricks" made from sand, bacteria, and human urine collected from special toilets in the engineering school's bathrooms. From The Guardian:

Bio-bricks are created through a natural process called microbial carbonate precipitation, said (project supervisor and water quality engineering lecturer Dyllon) Randall, similar to the way seashells are formed. Loose sand, which has been colonised with bacteria that produces urease, is mixed with the urine. Urease breaks down the urea in the urine, producing calcium carbonate, which cements the sand into shape.

While regular bricks are kiln-fired at temperatures of 1,400C and produce large amounts of carbon dioxide, the bio-bricks do not require heat.

“If a client wanted a brick stronger than a 40% limestone brick, you would allow the bacteria to make the solid stronger by ‘growing’ it for longer,” said Randall...

Randall described urine as liquid gold. By volume, urine accounts for less than 1% of domestic waste water, but it contains 80% of the nitrogen, 56% of the phosphorus and 63% of the potassium found in waste water.

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IEEE Spectrum editor Erico Guizzo and colleagues have blown out their original Robots app into a fantastic catalog of 200 of today's fantastic species of robots. They're cleverly organized into fun categories like "Robots You Can Hug," "Robots That Can Dance," "Space Robots," and "Factory Workers." If they keep it updated, it'll be very helpful for the robot uprising. After all, you can't tell the players without a program!

Robots: Your Guide to the World of Robotics (IEEE Spectrum)

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Most aquatic animals propel themselves with a tail or fluke, so roboticists have long been interested in the remarkable speeds possible by mimicking sea lion propulsion with front flippers. Read the rest

Brian McManus looks at the engineering challenges behind the Curiosity's thin aluminum wheels, which are sustaining significant damage on the Martian surface. Read the rest

François Chollet's "Notes to Myself on Software Engineering" is posed as reminders from Chollet to himself, but they're a really wonderful list of extremely sensible advice on how collaborative projects work, how to be a good collaborator, how to build things for other people to use, and how to collaborate with future engineers and builders who will some day want to hook things up to the thing you're making. Read the rest

During its 1970s heyday, the Concorde, the commercial supersonic plane that did NYC to London in under three hours, wasn't just a revolution in aerospace engineering; it was an icon of industrial design, set the bar in luxury travel, and, quite literally, embodied the jet-set lifestyle. Now, my friend qnd colleague Lawrence Azerrad, the creative director of the Grammy-winning Voyager Golden Record vinyl box set we released last year, has created a glorious art book about the Concorde and its scene in the sky. The book, Supersonic: The Design and Lifestyle of Concorde, overflows with historical and technical information and stunning photos of the plane, its marketing materials, and amenities designed by the likes of Andrée Putman, Raymon Loewy, and Sir Terence Conran who wrote this book's foreword. From CNN:

Taking a branded item home was part of the experience. Anything that could be removed from the plane would be taken by passengers as a souvenir. Some of these items were particularly sought after, like those designed by Raymond Loewy, the father of industrial design who created cabin interiors for Air France.

"He used a very forward-thinking, futuristic approach for that time, down to the design of the seats, the headrests, the fabric and, probably more famously, the stainless steel flatware, which Andy Warhol would famously steal," said Azerrad. "There's a story where (Warhol) asked if the person sitting next to him was taking theirs, she said no and he took her set."

Supersonic: The Design and Lifestyle of Concorde is a magnificent celebration of the history of our in-flight future. Read the rest

Yale engineers developed "robotic skins" from elastic sheets integrating sensors and electromechanical actuators. The idea is that most any flexible object could be transformed into a robot. Professor Rebecca Kramer-Bottiglio and her colleagues reported on their project, called OmniSkins, in the journal Science Robotics. From YaleNews:

Placed on a deformable object — a stuffed animal or a foam tube, for instance — the skins animate these objects from their surfaces. The makeshift robots can perform different tasks depending on the properties of the soft objects and how the skins are applied.

“We can take the skins and wrap them around one object to perform a task — locomotion, for example — and then take them off and put them on a different object to perform a different task, such as grasping and moving an object,” she said. “We can then take those same skins off that object and put them on a shirt to make an active wearable device.”

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London's Victoria and Albert Museum has digitized and posted two of Leonardo da Vinci's personal notebooks. From The Art Newspaper:

“The notebooks remind us that Leonardo was as much an engineer as he was an artist. When he wrote in the early 1480s to Ludovico Sforza, then ruler of Milan, to offer him his services, he advertised himself as a military engineer, only briefly mentioning his artistic skills at the end of the list,” (says Catherine Yvard, Special Collections curator at the V&A’s National Art Library.)

Codex Forster I dates from the time Leonardo spent at the Milanese court and focuses on hydraulic engineering, featuring drawings of instruments for digging canals and for moving and raising water. It also includes a treatise on geometry and measuring solids.

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Universal quantum computers have the potential for exponentially faster processing speeds. Seeker looks at where things stand in the race to build the first one. Read the rest

Skipping stones takes a little practice and finesse, so Mark Rober enlisted his extended family to help build the perfect rock-skipping robot. Their creation, named Skippa, ended up helping humans learn, too. Read the rest

Improved super-thin solar panels and nuclear fission are all in development to handle the massive logistical problems of meeting power needs in space. Fraser Cain takes viewers through the newest developments, including NASA's new Kilopower Reactor. Read the rest

A team led by Jean-Yves Rauch at FEMTO-ST demonstrated the μRobotex nanofactory's capabilities by building a tiny origami house from silica membranes. Read the rest

Ocado robots zip around simultaneously filling orders without bumping into each other in this fascinating look at a modern warehouse. Read the rest

YouTuber JerryRigEverything had a chance to fire some bullets at a bullet-proof car. The physics are interesting to watch as the energy disperses into the materials in slow motion. Read the rest

A reader writes, "A couple years ago MIT changed their dorm security/student tracking policy. They hired security contractors to work in dorms and required everyone to tap their RFID cards upon entry (no vouching for friends/guests). Most students complied. Some moved out. Some got in trouble ;)" Read the rest

If you're not already wearing a tinfoil hat, it may be a good time to start: a pair of engineers based out of the University of Michigan have figured out a way to create a light-powered camera sensor that's only a millimeter in size: small enough to be practically invisible to a casual observer.

According to a paper published in IEEE Electron Device Letters by Euisik Yoon and Sung-Yun Park, the new camera has the potential to not only be insanely small, but also, self sustaining, thanks to a solar panel placed directly behind the camera's image sensor, which is thin enough that light, in addition to what's needed to create an image, is able to pass right through it. This could provide the camera with all the power it needs to be able to continue to capture images, indefinitely.  At a maximum of 15 frames per second, the images it captures aren't of the best quality, but they're more than adequate for creeping on an unsuspecting subject.

The good news is that, for the time being, the camera is nothing more than a proof-of-concept. In order for it to be deployed in the real world as a near-invisible surveillance device, someone a lot smarter than me will need to figure out how to store image data and transmit it using hardware that's just as discrete as the camera's image sensor and power source are.

Fingers crossed that it'll take them a while to work those issues out.   Image via pxhere Read the rest

If you like sweary Canadians with lots of knowledge about building materials and construction, Arduino versus Evil has the most interesting armchair analysis of what caused the Florida International University bridge collapse. Read the rest