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App Gives Older People More Time to Cross the Street

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Crosswalk signals don’t take into account how quickly different kinds of pedestrians can walk across the street. But maybe they should. A new app currently being tested in the Netherlands allows older people to hold traffic for longer, allowing them more time to cross the street, according to The Guardian.

The Crosswalk app, made by the Dutch transportation technology company Dynniq, alerts traffic signals that someone with mobility issues is waiting. Using GPS and the software that runs the traffic signals, the technology helps traffic signals detect if someone using the app is standing on the corner. If so, the traffic signal’s timing will adjust accordingly.

The app has four settings so that people can adjust how much extra time they’re given, based on their individual needs. That way, someone who only needs a few extra seconds doesn’t leave traffic waiting forever while they’re already on the sidewalk.

The issue with creating a mobile app for older people, though, is that many of them might not be comfortable with smartphones. After advertising in the local paper and holding informational meetings, Dynniq was only able to recruit 10 people to test the app.

Still, there are other possible applications for signal-changing technology. It could be used more generally for people with disabilities or to increase safety during situations like when groups of schoolchildren need to cross the street. It could also be expanded to traffic itself, to create lights that are better timed for bikes (so that cyclists don’t have to start and stop every block) or to create green lights for emergency service vehicles.

Right now, the app is being tested in Tilburg, a city of about 210,000 people, but it's only in use in some areas of town. The current test will run into the fall. If it proves successful, the city will equip more traffic signals with Crosswalk in the future.

[h/t The Guardian]

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Space
SpaceX's Landing Blooper Reel Shows That Even Rocket Scientists Make Mistakes
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SpaceX's Falcon 9 rocket launches.
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On March 30, 2017, SpaceX did something no space program had done before: They relaunched an orbital class rocket from Earth that had successfully achieved lift-off just a year earlier. It wasn't the first time Elon Musk's company broke new ground: In December 2015, it nailed the landing on a reusable rocket—the first time that had been done—and five months later landed a rocket on a droneship in the middle of the ocean, which was also unprecedented. These feats marked significant moments in the history of space travel, but they were just a few of the steps in the long, messy journey to achieve them. In SpaceX's new blooper reel, spotted by Ars Technica, you can see just some of the many failures the company has had along the way.

The video demonstrates that failure is an important part of the scientific process. Of course when the science you're working in deals with launching and landing rockets, failure can be a lot more dramatic than it is in a lab. SpaceX has filmed their rockets blowing up in the air, disintegrating in the ocean, and smashing against landing pads, often because of something small like a radar glitch or lack of propellant.

While explosions—or "rapid unscheduled disassemblies," as the video calls them—are never ideal, some are preferable to others. The Falcon 9 explosion that shook buildings for miles last year, for instance, ended up destroying the $200 million Facebook satellite onboard. But even costly hiccups such as that one are important to future successes. As Musk once said, "If things are not failing, you are not innovating enough."

You can watch the fiery compilation below.

[h/t Ars Technica]

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travel
One Day, You May Not Have to Take Your Laptop Out at the Airport
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TSA security lines might be a little less annoying in the future. According to Condé Nast Traveler, the agency will soon test new airport scanners that allow you to keep your liquids and laptop in your carry-on bag during security screening, a benefit currently only available to those who have been accepted into the agency’s PreCheck program.

The ConneCT scanners have met the TSA's "advanced technology detection standards," according to the company that makes them, Analogic, meaning that they can be tested out at airports across the U.S.

Computed tomography scanning technology is regularly used in hospitals and research labs for everything from diagnosing cancer to studying mummies. The imaging technique uses x-rays that rotate around whatever object is being imaged to create 3D images that provide more detail than those created by the regular x-ray scanners currently used to inspect carry-on luggage.

The ConneCT scanners have been in the works for 10 years. The devices have x-ray cameras that spin around the conveyor belt that holds your bag, creating a 3D image of it. Then algorithms help flag whether there's something suspicious inside so that it can be pulled aside for further screening by hand. They've already been tested in airports in Phoenix and Boston, but haven't been used on a national level yet.

But don't expect to see the high-tech scanners at your local airport anytime soon. According to the TSA, they have to undergo yet more testing before any of the machines can be deployed, and there’s no timetable for that yet.

Until then, as you're packing your liquids, just remember—you can always just freeze them.

[h/t Conde Nast Traveler]

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