-- Scotts Contracting - StLouis Renewable Energy

Search This Blog

6.21.2011

degeneration in the oceans is happening much faster than has been predicted

State Of The Ocean: 'Shocking' Report Warns Of Mass Extinction From Current Rate Of Marine Distress

State Of The Ocean Report 2011 Ipso Mass Extinctio

First Posted: 06/20/11 05:19 PM ET Updated: 06/21/11 09:09 AM ET

If the current actions contributing to a multifaceted degradation of the world's oceans aren't curbed, a mass extinction unlike anything human history has ever seen is coming, an expert panel of scientists warns in an alarming new report.

The preliminary report from the International Programme on the State of the Ocean (IPSO) is the result of the first-ever interdisciplinary international workshop examining the combined impact of all of the stressors currently affecting the oceans, including pollution, warming, acidification, overfishing and hypoxia.

"The findings are shocking," Dr. Alex Rogers, IPSO's scientific director, said in a statement released by the group. "This is a very serious situation demanding unequivocal action at every level. We are looking at consequences for humankind that will impact in our lifetime, and worse, our children's and generations beyond that."

The scientific panel concluded that degeneration in the oceans is happening much faster than has been predicted, and that the combination of factors currently distressing the marine environment is contributing to the precise conditions that have been associated with all major extinctions in the Earth's history.

According to the report, three major factors have been present in the handful of mass extinctions that have occurred in the past: an increase of both hypoxia (low oxygen) and anoxia (lack of oxygen that creates "dead zones") in the oceans, warming and acidification. The panel warns that the combination of these factors will inevitably cause a mass marine extinction if swift action isn't taken to improve conditions.

The report is the latest of several published in recent months examining the dire conditions of the oceans. A recent World Resources Institute report suggests that all coral reefs could be gone by 2050 if no action is taken to protect them, while a study published earlier this year in BioScience declares oysters as "functionally extinct", their populations decimated by over-harvesting and disease. Just last week scientists forecasted that this year's Gulf "dead zone" will be the largest in history due to increased runoff from the Mississippi River dragging in high levels of nitrates and phosphates from fertilizers.

A recent study in the journal Nature, meanwhile, suggests that not only will the next mass extinction be man-made, but that it could already be underway. Unless humans make significant changes to their behavior, that is.


Travis Donovan Author, travis.donovan@huffingtonpost.com 

--


Google Invests $280 Million in SolarCity Project Finance Fund

Google Invests $280 Million in SolarCity Project Finance Fund

image SolarCity Funding

New project will finance fund for SolarCity Inc., a financier, installer and owner of rooftop photovoltaic systems.

Google Inc. (GOOG) agreed to put $280 million in a new project financing fund for SolarCity Inc., a financier, installer and owner of rooftop photovoltaic systems, in the Internet search engine’s biggest clean-energy investment.

The deal with San Mateo, California-based SolarCity is also Google’s first investment related to distributed solar energy, Rick Needham, the search engine’s director of green business operations, said by telephone yesterday.

The investment is a “quadruple-win” because it will enable more homeowners to lower their energy bills while also shifting to renewable energy, allow SolarCity to expand its business and facilitate wider deployment of solar, Needham said. Mountain View, California-based Google will also make a return on capital upfront, he said, since its investment is supported by the Treasury Department’s cash grants program.

As an alternative to tax credits, the program reimburses investors for 30 percent of project expenditures for solar. The program was created after the 2008 financial crisis to revive spending on clean energy. Projects must begin construction by the end of 2011 to be eligible.

With the looming expiration of the grants program, other corporations with large balance sheets need to “get into this space or else we’ll see project financing struggle,” Lyndon Rive, SolarCity’s chief executive officer, said yesterday in a telephone interview.

“Most solar financing has occurred with traditional banks,” Rive said. Those investors though are “constrained with the amount of capital that can be deployed for distributed power. Google is setting an example other corporate companies will follow,” he said.

For more on this article: http://www.bloomberg.com/news/2011-06-14/google-invests-280-million-in-solarcity-project-finance-fund.html

Source: Bloomberg

World of Renewables - Renewable Energy News, Events, Companies, Products, Jobs and more - Google Invests $280 Million in SolarCity Project Finance Fund

Green Jobs Are Real: German and American Solar Industry Both Employ More People Than U.S. Steel Production | Renewable Energy News Article

Washington, D.C., United States – With roughly 93,500 direct and indirect jobs, the American solar industry now employs about 9,200 more workers than the U.S. steel production sector, according to 2010 Bureau of Labor Statistics. The American steel industry has historically been a symbol of the country's industrial might and economic prosperity. But today, the solar industry has the potential to overtake that image as we build a new, clean-energy economy.

Green Jobs Are Real: German and American Solar Industry Both Employ More People Than U.S. Steel Production | Renewable Energy News Article

Solar power without solar cells: A hidden magnetic effect of light could make it possible

Solar Power Without Solar Cells: A Hidden Magnetic Effect of Light Could Make It Possible

ScienceDaily (Apr. 14, 2011) — A dramatic and surprising magnetic effect of light discovered by University of Michigan researchers could lead to solar power without traditional semiconductor-based solar cells.


The researchers found a way to make an "optical battery," said Stephen Rand, a professor in the departments of Electrical Engineering and Computer Science, Physics and Applied Physics.

In the process, they overturned a century-old tenet of physics.

"You could stare at the equations of motion all day and you will not see this possibility. We've all been taught that this doesn't happen," said Rand, an author of a paper on the work published in the Journal of Applied Physics. "It's a very odd interaction. That's why it's been overlooked for more than 100 years."

Light has electric and magnetic components. Until now, scientists thought the effects of the magnetic field were so weak that they could be ignored. What Rand and his colleagues found is that at the right intensity, when light is traveling through a material that does not conduct electricity, the light field can generate magnetic effects that are 100 million times stronger than previously expected. Under these circumstances, the magnetic effects develop strength equivalent to a strong electric effect.

"This could lead to a new kind of solar cell without semiconductors and without absorption to produce charge separation," Rand said. "In solar cells, the light goes into a material, gets absorbed and creates heat. Here, we expect to have a very low heat load. Instead of the light being absorbed, energy is stored in the magnetic moment. Intense magnetization can be induced by intense light and then it is ultimately capable of providing a capacitive power source."

What makes this possible is a previously undetected brand of "optical rectification," says William Fisher, a doctoral student in applied physics. In traditional optical rectification, light's electric field causes a charge separation, or a pulling apart of the positive and negative charges in a material. This sets up a voltage, similar to that in a battery. This electric effect had previously been detected only in crystalline materials that possessed a certain symmetry.

Rand and Fisher found that under the right circumstances and in other types of materials, the light's magnetic field can also create optical rectification.

"It turns out that the magnetic field starts curving the electrons into a C-shape and they move forward a little each time," Fisher said. "That C-shape of charge motion generates both an electric dipole and a magnetic dipole. If we can set up many of these in a row in a long fiber, we can make a huge voltage and by extracting that voltage, we can use it as a power source."

The light must be shone through a material that does not conduct electricity, such as glass. And it must be focused to an intensity of 10 million watts per square centimeter. Sunlight isn't this intense on its own, but new materials are being sought that would work at lower intensities, Fisher said.

"In our most recent paper, we show that incoherent light like sunlight is theoretically almost as effective in producing charge separation as laser light is," Fisher said.

This new technique could make solar power cheaper, the researchers say. They predict that with improved materials they could achieve 10 percent efficiency in converting solar power to useable energy. That's equivalent to today's commercial-grade solar cells.

"To manufacture modern solar cells, you have to do extensive semiconductor processing," Fisher said. "All we would need are lenses to focus the light and a fiber to guide it. Glass works for both. It's already made in bulk, and it doesn't require as much processing. Transparent ceramics might be even better."

In experiments this summer, the researchers will work on harnessing this power with laser light, and then with sunlight.

The paper is titled "Optically-induced charge separation and terahertz emission in unbiased dielectrics." The university is pursuing patent protection for the intellectual property.

Solar power without solar cells: A hidden magnetic effect of light could make it possible

Connect with Scotts Contracting

FB FB Twitter LinkedIn Blog Blog Blog Blog Pinterest

Featured Post

How Two Friends Turned Abandoned CASTLE into a 4☆HOTEL | by @chateaudut...

Join us on an extraordinary journey as two lifelong friends, Francis and Benoit, turn a crumbling, centuries-old castle into a stunning 4-st...