How 'Microcracks' Undermined San Francisco's New Bus Terminal

How 'Microcracks' Undermined San Francisco's New Bus Terminal

Engineers clambered up to the girders and slowly excised the cracked chunks with a diamond-oxide-studded cable saw, “so we could cut through it without heating it up and disturbing any of the evidence,” says Karl Frank, a civil engineer and steel-failure specialist working with Herrick, another company involved in building the terminal.

Finally, a Robot That Moves Kind of Like a Tongue

Finally, a Robot That Moves Kind of Like a Tongue

Two stickers with fibers running lengthwise constrain the balloon to make it turn as it inflates (such an actuator could also use hydraulics instead of air, by the way), while a third sticker with fibers running at a 45 degree angle make the balloon twist at the end.

The Hunt for Rocket Boosters in Russia's Far North

The Hunt for Rocket Boosters in Russia's Far North

But the hunter photographer Makar Tereshin followed there in January—his fifth trip to the region while shooting his stunning series Fields of Fall — was after bigger, more exotic prey: a 65-foot-long Soyuz rocket booster.

Prince Harry Has a Very Important Message About Fortnite

Prince Harry Has a Very Important Message About Fortnite

Prince Harry thinks the game should not be allowed in the United Kingdom at all. Turns out, Bioware's latest and not-at-all-most-loved game, Anthem had a rather tough birth.

Al Gore Did Not Invent the Green New Deal, but He Likes It

Al Gore Did Not Invent the Green New Deal, but He Likes It

I wanted to know how he thought emerging technologies could reduce carbon emissions, and also curious to hear his opinion of the Green New Deal, a proposal by Representative Alexandria Ocasio-Cortez and other Democrats to simultaneously address climate change and inequality.

Infared Photos Reveal Dubai's Green Space

Infared Photos Reveal Dubai's Green Space

Related Stories But that hasn't stopped Dubai from striving to become a " green paradise ." Over the past three decades , its gardeners have coaxed fountain grass, date palms, and ghat trees to take root in public parks, golf courses, and other places, even transforming the dead space beneath highway flyovers and cloverleafs into beautiful, patterned carpets irrigated by sewage water.

Sony's PlayStation Classic is a Great Deal Right Now (Only $40)

Sony's PlayStation Classic is a Great Deal Right Now (Only $40)

Sony After just a couple months on the market, Sony's PlayStation Classic has fallen to a more reasonable price. Retro Fun and Frustration I didn't write a full review of the PlayStation Classic last fall, but I did spend a good amount of time with it.

Gaze Upon the Black Magic of Electrical Discharge Machining

Gaze Upon the Black Magic of Electrical Discharge Machining

Gaze Upon the Black Magic of Electrical Discharge Machining Reliable EDM It’s not every day that industrial machining sends you into a fit of joy.

A Magic Wand? Nope, Just Good Ol’ Fashioned Physics

A Magic Wand? Nope, Just Good Ol’ Fashioned Physics

What happens if I hang a neutral object from the string and bring the positively charged PVC pipe? These moving electrons experience an attractive force from the positive charges on the PVC and thus move to the right side of the metal (as seen in the diagram).

Super-Fast Airport Scanners Are Coming—Eventually

Super-Fast Airport Scanners Are Coming—Eventually

It has installed a system at the Oakland Airport in California, not for passengers, but to screen employees as they come to work on the sensitive “air side” of operations, or as they move backward and forward several times a day from "land side." Evolv’s millimeter-wave scanners look like bulked-up versions of the beepy theft-prevention gates near the doors of some stores, and they can grab an image in a fraction of a second, as opposed to a more typical two seconds.

An Energy Evolution: From Delicious to Dirty to Almost Free

An Energy Evolution: From Delicious to Dirty to Almost Free

Still, it's energy from food.Burning StuffLet's say you want to heat up some water. Is it possible to use energy from food to heat the water? Changing the nucleus is what happens in a nuclear reaction.OK, so take an atom like Uranium-235.

Watch This Artist's Sonic Robots Play Thumping Techno Music

Watch This Artist's Sonic Robots Play Thumping Techno Music

Instead, he calls on his army of sonic robots—a collection of small, motorized creations that click, clank, and whirr in an intricate mechanical symphony.Geist composes robotic electronic music, a burgeoning genre of electro jams that relies on hardware, not software, to engineer electronic sounds and beats.

HP's New 3-D Printers Build Items Not of Plastic but of Steel

HP's New 3-D Printers Build Items Not of Plastic but of Steel

HP's New 3-D Printers Build Items Not of Plastic but of SteelHP is hoping its new Metal Jet 3-D printers will provide inroads into manufacturing sectors such as automobiles and medical devices.HPWhen you think about 3-D printing, chances are you think of little plastic doodads created by desktop devices like those made by MakerBot. Computing and printer giant HP wants you to think about metal.Today the company announced the Metal Jet printer, an industrial-scale 3-D printer that builds items not of plastic but of steel.3-D plastic printing is widely used for custom items such as prosthetics and hearing aids, and by product designers for prototyping.