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OCT 24

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"Advancement in technology has brought the success in all the fields. "..."

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New Solar Cell Material Offers Both Cheap and recommended site online us viagra Efficient Power
Written by Philip Proefrock on 24/10/13   

Another potential path for ever cheaper solar power is disocunt cialis now being researched by scientists investigating the use of perovskite minerals to make solar cells. Perovskites are a very cheap material that have good light capturing properties as well as good conductivity. The advantage that perovskites offer is a great combination of inexpensive production combined with good efficiency in energy production.

Current laboratory experiment versions of perovskite-based solar cells have efficiencies of about 15 percent. Although there are other solar cells with greater efficiency, the figure for perovskite cells is higher than other cheap-to-manufacture methods.

The advantages provided with perovskite materials come from requiring a far less intensive manufacturing process. While fabricating silicon-based solar cells requires careful and expensive processing of silicon to a high degree of purity (not to mention the energy intensity of that manufacturing), cells using perovskites are made by spray applying materials to cialis india pharmacy a glass or metal foil substrate, described as a "solar cell [that] can be fabricated as easily as painting a surface."

Perovskite-based solar cells might eventually be able to be produced for 10 to 20 cents per watt, as compared to present soalr panels which are around 75 cents per watt.

image: by Andrew Silver, USGS via Wikimedia Commons

via: MIT Technology Review


DEC 03

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"Well, studies suggest that China now pollutes the most greenhouse gase..."

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My Advice to the cialis for sale online UN: Trash the Kyoto Protocol
Written by Hank Green on 03/12/08   

The United Nations is meeting this week in Poland, trying to figure out how best to tackle Climate Change. And as they deliberate about how exactly to change their approach to next day levitra climate change, and prepare for the 2009 meeting in Copenhagen, where they will replace the Kyoto Protocol (set to expire in 2012). All I can say is, Kyoto is done, we need to move on. Now.


MAY 19

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"No doubt, I am really opposed to the deforestation that book-printing ..."

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Kindle Books Outselling All Print Books on Amazon
Written by Megan Treacy on 19/05/11   

Amazon announced today that its Kindle ebooks are now officially outselling all print books, including paperbacks and hardcover editions.  For every 100 print books sold, Amazon sells 105 Kindle books, a trend that the company expects to keep increasing.

The new figures do not inlcude the free ebooks, which would push the ratio of ebooks to print ones even further in the ebooks' favor.  The numbers do include, however, print books that are not available in a Kindle edition.

Kindle ebooks surpassed hardcover sales in July 2010, then paperback sales in December 2010 and now they outsell both combined.  Amazon said it has already sold three times as many ebooks so far in 2011 than it did in the same time period of 2010.

A study last year by the buy viagra canada Cleantech Group found that a Kindle has a lower carbon footprint than print books once you replace the purchase of viagra no rx 22.5 new books with ebooks.  Now that Amazon is selling so many ebooks, it's clear people are reducing their reading-related carbon footprints very quickly.

via Mother Nature Network

Images via Amazon


MAR 16

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"As a construction professional in the UK. The sustainability agenda is..."

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Will The Green Jobs Come?
Written by Yoni Levinson on 16/03/09   

The green jobs debate rages on. Some argue that all the stimulus money being poured into green efforts - like renewable energy and building retrofitting – will create millions of new jobs, and will revitalize the economy. Others are not so sure. The latest opinion to be voiced comes out of the Institute for Energy Research, which just published a study challenging the rosy predictions of people like the Center For American Progress (who predicted that $100 billion worth of green investment would create 2 million jobs).

One criticism is that the term “green job” is ill defined. This is buy discount levitra certainly true, although the root of the problem is that “green” is pretty ill defined to gay cialis begin with. There is no “green” sector – all sectors of our economic infrastructure are part of cialis online buy the problem, and fixing all of those parts will have to be part of the solution. And so, a construction worker weatherizing a house has a green job just as much as a solar energy technician.

And so it is difficult to make predictions in the first place, let alone specific numbers like 2 million. But the IER also points out that for all the new jobs that will be created when we start building wind turbines, we will lose jobs at coal power plants. In fact, the impact will go far beyond just the viagra in canada power sector. People talk about how the economy needs to be “restructured”; to be blunt, “restructuring” means that a lot of industries that people depend on to put food on their table will become discouraged, and eventually useless.


SEP 20

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"This should be the mantra for all future energy development. 2003 taug..."

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Combined Power Hydrogen Station
Written by Philip Proefrock on 20/09/11   

A hydrogen refueling station in Fountain Valley, California is not only providing fuel for vehicles, but is also helping to supply power to an adjacent industrial facility, and it is reported to be the first "tri-generation fuel cell and hydrogen station" in the world.

The hydrogen energy station is located next to a wastewater treatment facility, and biogas generated from that facility provides the feedstock for the system. The biogas is converted into hydrgen which is then available for refueling hydrogen vehicles as well as for a hydrogen fuel cell from FuelCell Energy which generates 250 kilowatts of electricity for the wastewater plant. Approximately 25 vehicles per day can be refueled from this station, in addition to the electrical power generated.



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