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Sun12282014

Boeing successfully completes test flight with green diesel

Boeing successfully completes test flight with green diesel

Boeing has completed the world’s first flight using green diesel. On December 3,...

U.N.F.C.C.C. head urges climate action as Lima Conference begins

U.N.F.C.C.C. head urges climate action as Lima Conference begins

United Nations Framework Convention on Climate Change Executive Secretary Christ...

Philippines houses world’s largest solar-powered mall

Philippines houses world’s largest solar-powered mall

A mall in the capital city of the Philippines is now sporting a 1.5-megawatt sol...

U.S., China announce significant emissions reduction cuts

U.S., China announce significant emissions reduction cuts

The Governments of the United States and China have announced that they will be ...

Best Eco Cars of 2014

Best Eco Cars of 2014

Eco-friendly cars, also referred to as green cars, are vehicles that have a less...

Largest wind farm in Southeast Asia goes online in the Philippines

Largest wind farm in Southeast Asia goes online in the Philippines

The largest wind farm in Southeast Asia, a 150-megawatt installation in the Phil...

SPI Solar to acquire 360 MW worth of solar power projects in China

SPI Solar to acquire 360 MW worth of solar power projects in China

Solar Power, Inc. is set to become one of the largest solar developers in China....

Business

tenKsolar expands manufacturing capacity in Thailand

tenKsolar expands manufacturing capacity in Thailand

Friday, 19 December 2014

tenKsolar is establishing new production lines in Thailand for their manufacture of their solar modules. tenKsolar, which is based in Minneapolis, des...

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Technology

Bacteria producing sweet-smelling compound for greener fuels

Bacteria producing sweet-smelling compound for greener fuels

Tuesday, 02 December 2014

A sweet-smelling chemical compound primarily used in fragrances and flavoring is being studied for its potential as a clean and green biofuel. Methyl ...

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Politics

U.N. chief hails results of C.O.P. 20

U.N. chief hails results of C.O.P. 20

Wednesday, 17 December 2014

United Nations Secretary-General Ban Ki-moon hailed the results of the recently concluded Conference of the Parties in Lima, Peru. The Secretary-Gener...

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Living Green

Seven tips to keep cozy and warm while keeping energy use low

Seven tips to keep cozy and warm while keeping energy use low

Tuesday, 23 December 2014

People will always have the impulse to be comfortable and will spend to do so, rather than save and compromise. City living in the U.S. would require ...

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Renewables

Vestas wins orders from U.K., Poland, and Turkey

Vestas wins orders from U.K., Poland, and Turkey

Tuesday, 23 December 2014

Wind turbine manufacturer Vestas has received firm and unconditional orders from the United Kingdom, Poland, and Turkey. In the U.K., Vestas has recei...

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Low-Carbon

Seven eco-friendly home heating solutions

Seven eco-friendly home heating solutions

Friday, 12 December 2014

Environmentally friendly home heating solutions are valuable for the planet, and can lower your utility bills. With the numerous home heating alternat...

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Opinion

Unsustainable urban life: What's next?

Unsustainable urban life: What's next?

Wednesday, 11 June 2014

Nutrition plays a critical role in everyone’s chance at a better future. Hunger, said Benjamin Franklin once, is the best pickle. Some say “pickle”...

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Desulfurized jet fuel has net cooling effect on atmosphere – study

A Yale University study found that the desulfurization of jet fuel could have a small, net cooling effect on the atmosphere.

While the Federal Aviation Administration has encouraged the use of desulfurized jet fuel to potentially improve air quality in airports and reduce risk of respiratory and cardiovascular illness, the Yale study points to another beneficial effect.

Sulfur-laden jet fuel, when burned, form sulfate particles that scatter solar radiation into space. It thus contributes to warming when sulfur is removed from jet fuel. However, the formation of nitrate from nitrogen oxides in jet exhaust offsets this by its own cooling effect.

"It's a win-win situation, because the sulfate can be taken out of the fuel to improve air quality around airports and, at the same time, it's not going to have a detrimental impact on global warming," said Nadine Unger, an assistant professor of climate science at the Yale School of Forestry and Environmental Studies.

The study used a model that assessed the impact of reducing the amount of sulfur in jet fuel from 600 milligrams per kilogram of fuel to 15 milligrams per kilogram, the level targeted by the United States Department of Transportation.

A paper on the study, authored by Ms. Unger and entitled "Global Climate Impact of Civil Aviation for Standard and Desulferized Jet Fuel" was published in Geophysical Research Letters in October. – Katrice R. Jalbuena



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