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Britain opens world's largest offshore wind farm
July 8, 2013
(Reuters) - The world's largest offshore wind farm, which can generate enough electricity for half a million homes, was officially opened off Britain's south-east coast on Thursday.
Prime Minister David Cameron opened the 630-megawatt London Array project, which was developed by E.ON, DONG Energy and Abu Dhabi's Masdar and produced its first electricity from all its turbines in April.
The 1.5 billion pound ($2.3 billion) wind farm, built 20 kilometers offshore, contains 175 turbines and solidifies Britain's position at the top of the world's offshore wind league table.
Algae Shows Promise as Pollution-Fighter, Fuel-Maker
June 27, 2013 — A hardy algae species is showing promise in both reducing power plant pollution and making biofuel, based on new research at the University of Delaware.
The microscopic algae Heterosigma akashiwo grows rapidly on a gas mixture that has the same carbon dioxide and nitric oxide content as emissions released from a power plant.
"The algae thrive on the gas," said Kathryn Coyne, associate professor of marine biosciences in UD's College of Earth, Ocean, and Environment. "They grow twice as fast and the cells are much larger in size compared to when growing without gas treatment."
The algae also make large amounts of carbohydrates, which can be converted into bioethanol to fuel vehicles. The findings could have industrial applications as a cost-effective way to cut greenhouse gas pollution when paired with biofuel production.
Environmental advocates, visitors question removal of BP oil cleaning crews in Gulf
June 17, 2013
Finding tar balls linked to the BP oil spill isn't difficult on some Gulf Coast beaches, but the company and the government say it isn't common enough to keep sending out the crews that patrolled the sand for three years in Alabama, Florida and Mississippi.
Environmental advocates and casual visitors alike are questioning the Coast Guard decision to quit sending out BP-funded crews that have looked for oil deposits on northern Gulf Coast beaches on a regular basis since the 2010 spill spewed millions of gallons of oil into the Gulf after an explosion and fire that killed 11 workers.
Urban Trees Remove Fine Particulate Air Pollution
June 21, 2013
In the first effort to estimate the overall impact of a city's urban forest on concentrations of fine particulate pollution (particulate matter less than 2.5 microns, or PM2.5), a U.S. Forest Service and Davey Institute study found that urban trees and forests are saving an average of one life every year per city. In New York City, trees save an average of eight lives every year.
Fine particulate air pollution has serious health effects, including premature mortality, pulmonary inflammation, accelerated atherosclerosis, and altered cardiac functions. In a study recently published on-line by the journal Environmental Pollution, researchers David Nowak and Robert Hoehn of the U.S. Forest Service and Satoshi Hirabayashi and Allison Bodine of the Davey Institute in Syracuse, N.Y., estimated how much fine particulate matter is removed by trees in 10 cities, their impact on PM2.5 concentrations and associated values and impacts on human health.
World's wind turbines to cross the 300 gigawatt mark - data
June 17, 2013
(Reuters) - The world will have enough wind turbines to generate more than 300 gigawatts of power - the equivalent of 114 nuclear power plants - by the end of the year, industry figures show.
As Brazil, China, Mexico and South Africa add turbines, the figure represents modest growth compared with a year ago, when the overall total capacity was just over 280 gigawatts.