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Archive for the ‘sustainability’ category: Page 591

Jul 21, 2016

Facebook’s flock of drones

Posted by in categories: drones, internet, solar power, sustainability

Facebook plans to use solar-powered drones to extend internet access to remote parts of the planet.

Read the latest on these ambitious plans: http://bbc.in/29WgEvF

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Jul 21, 2016

Facebook plans to beam fast Internet to remote areas using lasers

Posted by in categories: drones, internet, solar power, sustainability

So far the system can be used to receive signals carrying data at rates of up to 2.1 gigabits per second, though the team claims it could go faster if it were built to absorb infrared, rather than blue, light.

It’s worth pointing out that this isn’t the first piece of hardware to emerge from the Connectivity Lab. Famously, it’s been working on a solar-powered drone to deliver Internet access. That particular project is progressing slowly, though, so despite the fact that the team behind the new laser device plans to test it in a real-world setting, there’s likely still much development ahead before it’s used widely.

The social network is, however, busy pursuing plenty of other projects to take data to the sticks. Most notably, its Telecom Infra Project will use open-source cellular networks to achieve similar results. That way, you see, anyone will be able to sign up on Facebook.

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Jul 20, 2016

Physicists Say They’ve Figured out How Spacecraft Could Make It Through a Wormhole

Posted by in categories: climatology, cosmology, physics, space travel, sustainability

A new paper asserts that a physical body might be able to pass through a wormhole in spite of the extreme tidal forces that are at play.

A physical object, such as a person or a spacecraft, could theoretically make it through a wormhole in the centre of a black hole, and maybe even access another universe on the other side, physicists have suggested.

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Jul 20, 2016

Solar-powered desalination produces energy

Posted by in categories: solar power, sustainability

Silver, silica and titania nanocomposite converts seawater into pure drinking water and hydrogen gas.

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Jul 19, 2016

Australian robot gets put to work, herds sheep and cows (Tomorrow Daily 393)

Posted by in categories: food, health, robotics/AI, sustainability

Definitely need this for the farm.


This robot cowboy not only herds cattle, soon it will also monitor the herd’s health and alert ranchers to any injuries or illness to livestock.

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Jul 19, 2016

Quantum computers show potential to revolutionize chemistry

Posted by in categories: chemistry, neuroscience, quantum physics, robotics/AI, solar power, supercomputing, sustainability

Like this feature on QC.


If you have trouble wrapping your mind around quantum physics, don’t worry — it’s even hard for supercomputers. The solution, according to researchers from Google, Harvard, Lawrence Berkeley National Laboratories and others? Why, use a quantum computer, of course. The team accurately predicted chemical reaction rates using a supercooled quantum circuit, a result that could lead to improved solar cells, batteries, flexible electronics and much more.

Chemical reactions are inherently quantum themselves — the team actually used a quote from Richard Feynman saying “nature isn’t classical, dammit.” The problem is that “molecular systems form highly entangled quantum superposition states, which require many classical computing resources in order to represent sufficiently high precision,” according to the Google Research blog. Computing the lowest energy state for propane, a relatively simple molecule, takes around ten days, for instance. That figure is required in order to get the reaction rate.

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Jul 18, 2016

‘Green’ electronic materials produced with synthetic biology

Posted by in categories: bioengineering, biotech/medical, computing, nanotechnology, solar power, sustainability

Biowire.


Researchers led by microbiologist Derek Lovely say the wires, which rival the thinnest wires known to man, are produced from renewable, inexpensive feedstocks and avoid the harsh chemical processes typically used to produce nanoelectronic materials.

Lovley says, “New sources of electronic materials are needed to meet the increasing demand for making smaller, more powerful electronic devices in a sustainable way.” The ability to mass-produce such thin conductive wires with this sustainable technology has many potential applications in electronic devices, functioning not only as wires, but also transistors and capacitors. Proposed applications include biocompatible sensors, computing devices, and as components of solar panels.

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Jul 18, 2016

5 Reasons To ‘Farm’ In Low-Earth Orbit

Posted by in categories: food, habitats, space travel, sustainability

Large Earth-orbiting greenhouses will someday likely be as commonplace as peanut acreage on Georgia’s coastal plains.


Low-Earth orbit (LEO) would hardly appear to be the best place to take up farming. But both NASA and the burgeoning commercial space industry are already planning for a time when in addition to on-orbit space hotels and new research stations, there will also be Earth-orbiting greenhouses. Such structures will provide a horn of plenty for growing numbers of LEO residents and astronauts venturing beyond Earth orbit to the Moon, Mars or even the Main Asteroid Belt.

The initial case for LEO agriculture would be to feed a growing population of space-dwellers — either using a greenhouse that remained permanently attached to the LEO habitat, or a greenhouse that was free-flying and uncrewed.

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Jul 15, 2016

Energy Conversion Efficiency Exceeding 18% Achieved Using Standard Size Perovskite Solar Cells

Posted by in categories: solar power, sustainability

A research group led by Liyuan Han, a leader of the Photovoltaic Materials Group, National Institute for Materials Science (NIMS), achieved energy conversion efficiency exceeding 18% using standard size (1 cm2) perovskite solar cells for the first time in the world.

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Jul 13, 2016

Repurposing the ribosome for synthetic biology

Posted by in categories: bioengineering, biological, education, sustainability

Over the past several years, Northwestern Engineering’s Michael Jewett did the seemingly impossible. He overcame the critical barrier to making mutant ribosomes, the core catalyst in cells that are responsible for life.

Now, with funding from the Department of Defense’s Multidisciplinary University Research Initiatives (MURI) program, Jewett is ready to take this research to the next level. Along with a multi-school team, he plans to use engineer and repurpose the ribosome to make new kinds of polymers for flow batteries.

“We are in a new era of biomaterial design,” Jewett said. “So far, the ribosome has been this untouchable biomolecular machine — one that we couldn’t engineer or modify. Now, armed with recent advances in our ability to construct new versions, new applications may only be limited by our imagination.”

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