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Archive for the ‘energy’ category: Page 257

May 28, 2017

The Solar Industry Is Creating Jobs 17 Times Faster Than the Rest of the U.S. Economy

Posted by in categories: economics, employment, energy, sustainability

Jobs in the solar field in the United States grew at a rate 17 times faster than the overall economy. This was part of a larger trend towards jobs in renewable energy and away from more dangerous, less sustainable jobs in fossil fuels.

A new report released by the International Renewable Energy Agency (IRENA) reveals that solar jobs in the U.S. (and other nations) are expanding quickly. As of November 2016, the American solar industry employed 260,077 workers. This is an increase of 24.5% from 2015, with a growth rate that is 17 times faster than the United States economy as a whole.

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May 26, 2017

Small flying “cars” come a bit closer to reality | The Economist

Posted by in categories: energy, robotics/AI, transportation

“A German firm completes a test, and Uber promises a prototype by 2020″

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May 22, 2017

A fundamental quantum physics problem has been proved unsolvable

Posted by in categories: energy, quantum physics

For the first time a major physics problem has been proved unsolvable, meaning that no matter how accurately a material is mathematically described on a microscopic level, there will not be enough information to predict its macroscopic behaviour.

The research, by an international team of scientists from UCL, the Technical University of Music and the Universidad Complutense de Madrid – ICMAT, concerns the spectral gap, a term for the energy required for an electron to transition from a low-energy state to an excited state.

Spectral gaps are a key property in semiconductors, among a multitude of other materials, in particular those with superconducting properties. It was thought that it was possible to determine if a material is superconductive by extrapolating from a complete enough microscopic description of it, however this study has shown that determining whether a material has a spectral gap is what is known as “an undecidable question”.

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May 22, 2017

Weird energy beam seems to travel five times the speed of light

Posted by in categories: energy, space

The galaxy M87 emits a jet of plasma that looks like it’s breaking the cosmic speed limit – here’s how it manages the trick.

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May 19, 2017

Scientists Found a Low-Cost Way to Produce the World’s Cleanest Energy Source

Posted by in categories: energy, physics

Scientists have discovered a low-cost, efficient catalyst for splitting water to create hydrogen. This means that the world’s cleanest form of energy, hydrogen, may be more easily and cheaply produced.

Physicists at the University of Houston have discovered a low-cost, efficient, and easily available catalyst that can split water into hydrogen and oxygen. The catalyst is far more efficient than other options that have previously been employed, and because it is grown from ferrous metaphosphate on a conductive nickel foam platform, it is both more durable and cheaper to produce.

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May 18, 2017

India cancelling huge coal power station because it wants to focus on renewable energy

Posted by in categories: energy, government, sustainability

A planned coal fired mega power plant in India has been scrapped because the government wants to focus on green energy.

Gujarati state officials had planned a 4,000-Megawatt ultra-mega power project (UMPP).

It would have been the state of Gujarat’s second UMPP.

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May 15, 2017

Towards an Economically Viable roadmap to large scale space colonization

Posted by in categories: energy, space

Al Globus and Joe Strout have an analysis that space settlements in low (~500 km) Earth equatorial orbits may not require any radiation shielding at all. This is based on a careful analysis of requirements and extensive simulation of radiation effects. This radically reduces system mass and has profound implications for space settlement, as extraterrestrial mining and manufacturing are no longer on the critical path to the first settlements, although they will be essential in later stages. It also means the first settlements can evolve from space stations, hotels, and retirement communities in relatively small steps.

This huge reduction in total mass compensates for the greater energetic difficulty of launching materials from Earth to ELEO as opposed to launching from the Moon to L5, the design location of the Stanford Torus. In the early studies, the Earth­Moon L5 point was chosen as the location of a settlement for the energetic advantage of launching materials from the Moon. Going from the Moon to L5 requires a delta­-v 3 of 2.3 km/sec, and going from Earth to 500 km ELEO is 10 km/sec [Cassell 2015]. Using the velocity squared as our energy measure, Earth to ELEO requires 19 times more energy per unit mass. Analysis suggests that at least 19 times less mass is needed if no radiation shielding is required. Thus, the energetic advantage to launching the mass of a settlement with deep space radiation shielding from the Moon to L5 is balanced by launching far less mass from Earth if no radiation shielding is necessary.

A 500 km circular ELEO using polyethylene shielding was analyzed. Even at 10 kg/m2 shielding, the equivalent of which is very likely to be provided by any reasonable hull, the 20 mSv/yr and 6.6 mGy/yr are met. Indeed, with no shielding at all the general population limit is met and the pregnancy limit is very nearly met. This has an interesting consequence: spacewalks in ELEO may be safe enough from a radiation point of view to be a significant recreational activity.

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May 12, 2017

The world’s most valuable resource is no longer oil, but data

Posted by in categories: economics, energy, internet

But there is cause for concern. Internet companies’ control of data gives them enormous power. Old ways of thinking about competition, devised in the era of oil, look outdated in what has come to be called the “data economy” (see Briefing). A new approach is needed.


A NEW commodity spawns a lucrative, fast-growing industry, prompting antitrust regulators to step in to restrain those who control its flow. A century ago, the resource in question was oil. Now similar concerns are being raised by the giants that deal in data, the oil of the digital era. These titans—Alphabet (Google’s parent company), Amazon, Apple, Facebook and Microsoft—look unstoppable. They are the five most valuable listed firms in the world. Their profits are surging: they collectively racked up over $25bn in net profit in the first quarter of 2017. Amazon captures half of all dollars spent online in America. Google and Facebook accounted for almost all the revenue growth in digital advertising in America last year.

Such dominance has prompted calls for the tech giants to be broken up, as Standard Oil was in the early 20th century. This newspaper has argued against such drastic action in the past. Size alone is not a crime. The giants’ success has benefited consumers. Few want to live without Google’s search engine, Amazon’s one-day delivery or Facebook’s newsfeed. Nor do these firms raise the alarm when standard antitrust tests are applied. Far from gouging consumers, many of their services are free (users pay, in effect, by handing over yet more data). Take account of offline rivals, and their market shares look less worrying. And the emergence of upstarts like Snapchat suggests that new entrants can still make waves.

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May 8, 2017

New artificial photosynthesis process converts CO2 in air to fuel

Posted by in categories: energy, food, sustainability

A win win, assuming it can be manufactured en mass and at a reasonable price.


Professor Fernando Uribe-Romo and his team of students created a way to use LED light and a porous synthetic metal-organic frameworks (MOF) material to break down carbon dioxide into fuel. (credit: Bernard Wilchusky/UCF)

A University of Central Florida (UCF) chemistry professor has invented a revolutionary way to remove carbon dioxide (CO2) from air by triggering artificial photosynthesis in a synthetic material — breaking down carbon dioxide while also producing fuel for energy.

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May 8, 2017

Generating power from polluted air

Posted by in categories: energy, nanotechnology, sustainability

Researchers from the University of Antwerp and KU Leuven (University of Leuven), Belgium, have developed a process that purifies air, and at the same time, generates power. The device must only be exposed to light in order to function.

“We used a small with two rooms separated by a membrane,” explained professor Sammy Verbruggen (UAntwerp/KU Leuven). “Air is purified on one side, while on the other side, is produced from a part of the degradation products. This gas can be stored and used later as fuel, as is already being done in some hydrogen buses, for example.”

In this way, the researchers respond to two major social needs: clean air and alternative energy production. The heart of the solution lies at the membrane level, where the researchers use specific nanomaterials. “These catalysts are capable of producing hydrogen gas and breaking down air pollution,” explains professor Verbruggen. “In the past, these cells were mostly used to extract hydrogen from water. We have now discovered that this is also possible, and even more efficient, with .”

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