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Wed07292015

Hong Kong’s policy on environment-friendly commercial vehicles to tighten

Hong Kong’s policy on environment-friendly commercial vehicles to tighten

Hong Kong’s Environmental Protection Department will be tightening its qualifyin...

Philippines’ new wind farms add 303 MW to country’s power supply

Philippines’ new wind farms add 303 MW to country’s power supply

Two new wind farms in the Philippines have added 303 megawatts of clean energy t...

Geneva talks require “business unusual” approach – W.W.F.

Geneva talks require “business unusual” approach – W.W.F.

A “business unusual” approach is needed in the Geneva Talks to successfully deli...

New battery uses old batteries for greener energy storage

New battery uses old batteries for greener energy storage

Energizer has developed the world’s first high-performance battery made with rec...

Global warming to bring more devastating weather patterns

Global warming to bring more devastating weather patterns

The United Nations World Meteorological Organization confirmed that global warmi...

Jamaica to get 36.3 MW wind farm by 2016

Jamaica to get 36.3 MW wind farm by 2016

A 36.3 megawatt wind farm in Jamaica has received $62.7 million in funding from ...

A.D.B. provides Thailand with $85 million to develop wind power plant

A.D.B. provides Thailand with $85 million to develop wind power plant

The Asian Development Bank will be providing a company in Thailand loans to deve...

Business

Georgia taking leadership role in developing solar power

Georgia taking leadership role in developing solar power

Tuesday, 17 February 2015

The state of Georgia is emerging as a leader among the 50 states in promoting and implementing the use of solar energy, in part because of both busine...

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Technology

Penn State develops CPV system for rooftops

Penn State develops CPV system for rooftops

Tuesday, 10 February 2015

Researchers at Penn State have developed a concentrating photovoltaic system that is small enough and light enough to be mounted on a building’s roof....

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Politics

New draft text for climate agreement in Geneva reached

New draft text for climate agreement in Geneva reached

Monday, 16 February 2015

A new climate change draft text has been reached during the one-week United Nations-facilitated Geneva talks, leading to a binding treaty that is expe...

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Living Green

Wall-to-floor eco-friendly interior design

Wall-to-floor eco-friendly interior design

Tuesday, 17 February 2015

The materials you surround yourself with—from flooring and window coverings to furniture and accessories—have a great impact on the health of your hom...

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Renewables

Vestas supplies Poland, U.K. with turbines

Vestas supplies Poland, U.K. with turbines

Tuesday, 17 February 2015

Wind turbine manufacturer Vestas has announced that they have secured orders this week for two projects in Poland and the United Kingdom. The orders c...

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Low-Carbon

PG&E plans ambitious E.V. charger roll-out in California

PG&E plans ambitious E.V. charger roll-out in California

Tuesday, 17 February 2015

An estimated 25,000 electric vehicle chargers could be deployed in California by Pacific Gas and Electric Company. PG&E is seeking permission from Cal...

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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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