Inhabitat's Week in Green: TORQ Roadster, quantum-dot solar cells and an invisibility cloak

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

This week, Team Inhabitat traveled to Mountain View, Calif., to get a look at the 100 percent sun-powered Solar Impulse airplane before it embarks on its first flight across the United States. Inhabitat editors also braved the crowds at the 2013 New York International Auto Show to report on the hottest new hybrids and electric cars. Some of the green cars unveiled at this year's show were the compact Mercedes-Benz 2014 B-Class Electric Drive and BMW's sexy new Active Tourer plug-in hybrid. The Tesla Model S was named the 2013 World Green Car of the Year, beating out the Renault Zoe and the Volvo V60. And speaking of new auto unveils, Epic EV unveiled its new all-electric TORQ Roadster, which looks like a roofless Batmobile and can go from 0-60 MPH in just four seconds.

In green design news, a 19-year-old unveiled plans for an amazing Ocean Cleanup Array that could remove 7.25 million tons of plastic waste from the world's oceans using an anchored network of floating booms and processing platforms. A Mexico City hospital features an innovative screen that can actually eat smog, purifying the air around it. Paris-based Sitbon Architectes designed Bloom, a futuristic floating phytoplankton farm that could absorb CO2 and monitor rising sea levels. And the folks behind FarmedHere recently opened up the country's largest vertical farm in a 90,000-square-foot post-industrial building, providing fresh organic veggies to the Chicago area.

It was also a big week for clean energy as Israeli start-up Phinergy developed a recyclable aluminum-air battery that could power electric vehicles for thousands of miles. Meanwhile US researchers unveiled a new recyclable organic solar cell that is made from trees. Scientists at the University of Georgia announced that they discovered a new microbe that can turn carbon emissions in the atmosphere into biofuel, and a team of MIT scientists created a more efficient solar cell using quantum dots that are embedded in a forest of nanowires.

On the green technology front, flying drones are on the rise -- but not for defense. California-based startup Matternet, Inc. has created a battery-powered quadcopter drone that could be used to deliver supplies and disaster relief to remote areas. A team from China's Zhejiang University created Graphene Aerogel, which weighs just 16 milligrams per cubic centimeter and is now officially the world's lightest material. New York's New Museum hijacked local pay phones to turn them into time machines that let you listen in on conversations from 20 years ago. Finally, in wearable technology news, Google announced that its Glass headsets will be made and assembled in the USA, University of Texas researchers devised an invisibility cloak that can hide 3D objects from microwaves and Chaotic Moon created a "Helmet of Justice" bike helmet that can record video evidence in case of a hit-and-run incident.

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By: Unknown On 11:12 PM

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Alt-week 2.9.13: Seismic invisibility, bacterial gold and really, really big prime numbers

Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.

The lure of gold, the unpredictable weather and the power of invisibility. What do these three things have in common? We'd argue their almost universal appeal to the human race. Science makes headway in all three of these areas in this edition. On top of that there's a really, incredibly, massive prime number. This is alt-week.

The hunt for gold's spun many a tale of rags to riches and even woven its way into our folklore. We bet, however, that (like us) many didn't know that gold production can take place at a microbial level, with much more than just the family farm at stake. Delftia acidovorans is a bacteria that lives in the biofilm environment found atop gold deposits. But, its luxurious choice of habitat also presents a real danger -- as gold ions are also fatally toxic to the bug. No biggie though, as the clever bacteria has turned alchemist, by creating a chemical -- a protein called delftibactin -- that converts the ions into gold nanoparticles. We know what you're thinking, and we're right ahead of you. So are the people behind the team that discovered this activity, with Nathan Magarvey from McMaster University suggesting that this could, indeed, have uses for the discovery and extraction of gold in natural sources. Given the tiny amounts that are being talked about, there'll be no worries about a modern gold rush, but, if harnessed correctly, it's thought the critters could play a role in recovery of, or as a biosensor for the shiny stuff in the future.

What's the biggest prime number you can think of? If like us, it's no bigger than 131 (okay, we even had to wiki that), then don't worry, you're not alone. There are, however, mathmatical minds that dedicate themselves to this very pursuit -- albeit with the use of technology. The largest known such number is 257885161 - 1, is 17 million digits long, and was recently discovered by a bunch of computers in Missouri taking part in the Great Internet Mersenne Prime Search (GIMPS). Not sure how big a number like that is? Well, it reportedly took the computer array that discovered it 39 days to double check that it was actually prime. Our heads are hurting just thinking about that. The previous largest prime was apparently "just" 13 million digits long -- still some 12,999,997 longer than our best effort.

Invisibility is possibly the holiest of holy grails for many young (or once young) fertile minds. Sadly, it still seems like the cloak of our dreams is still some way out. Much of the current work in invisibility is concentrating on the visual aspect -- directing photons etc. Recently announced work at the Institut Fresnel in Marseille, France, however, has used a similar idea to create a "seismic invisibility cloak" that could help protect structures against earthquakes and more. The team drilled an array of 200 meter-deep boreholes, filled them with clay silt, and then set up acoustic monitoring of the area. To test their theory, 50 Hz waves with a 14mm displacement were emitted from one side, allowing them to measure what was received on the other. The result? According to the researchers, the waves were diverted away well, with almost nothing making its way past the second round of boreholes. The experiment is only designed to work with waves at a certain frequency, and there is the issue of dealing with where the reflections actually go (potentially other nearby structures?), but, for now, this represents a promising stretch in the right direction.

Dutch researchers at Wageningen UR have published results of their work that repurposed mobile network infrastructure to provide detailed, real-time rainfall maps. By monitoring the water-induced attenuation between mobile transmitters and receivers a surprisingly accurate gauge of rainfall intensity was recorded. The work could benefit the measurement of surface precipitation in areas where radar is either not present, or not viable (assuming a mobile network exists there also). This could help the management of water resources, climate research and, of course, weather prediction. The team's example used just one Dutch national network to demonstrate the method, but are keen to stress that due to the proliferation of these Tx / Rx network links around civilised areas generally, there's a wealth of resource sat there untapped.

[Image credits: BlurbfromtheBurbs]

Seen any other far-out articles that you'd like considered for Alt-week? Working on a project or research that's too cool to keep to yourself? Drop us a line at alt [at] engadget [dot] com.

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By: Unknown On 10:32 AM

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Inhabitat's Week in Green: invisibility cloak, a Hobbit House and a portable washing machine

Each week our friends at Inhabitat recap the week's most interesting green developments and clean tech news for us -- it's the Week in Green.

Christmas is right around the corner, and for all of you procrastinators out there, we recently shared our handy guide to last-minute gifts that can be whipped up in the 11th hour. We also have some great suggestions for non-consumerist gifts of time and if you're crafty, don't forget to check out our DIY guide for cool make-it-yourself gift ideas like these useful texting gloves and this curiously strong solar charger upcycled from an old Altoids tin. For a fun activity to do with the whole family, check out our homemade holiday greeting card and DIY Christmas cracker tutorials, and before putting your gifts under the tree, don't miss our guide to eco-friendly gift wrap alternatives.

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By: Dilusha On 10:20 PM

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