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25 Years after the Exxon Valdez, Sea Otter Population at Pre-Spill Levels

By Guest PostMarch 3, 2014Environment, Naturebenjamin weitzman, brenda ballachey, coast of alaska, crude oil, exxon valdez, oil spill, pre spill levels, prince william sound, prudhoe bay, sea otter population, U.S. Geological Survey, wildlife

ANCHORAGE — Nearly 25 years after the Exxon Valdez oil spill injured wildlife off the coast of Alaska, a new report issued today by the U.S. Geological Survey indicates that sea otters have returned to pre-spill numbers within the most heavily oiled areas of Prince William Sound.

Sea otters in the path of the oil incurred heavy mortality when 42 million liters of Prudhoe Bay crude oil were spilled in Prince William Sound in March 1989, with an estimated loss of several thousand otters. Through long-term data collection and analysis, scientists found that sea otters were slow to recover, likely because of chronic exposure to lingering oil. Other studies documented persistence of oil in the sea otter’s intertidal feeding habitats. (more…)

How Butterfly Wings Can Inspire New High-Tech Surfaces

By Guest PostNovember 11, 2012Nature, Scienceaircraft, bacteria, bharat bhushan, butterfly, butterfly wings, catheter, coated, crude oil, electron microscope, fluid flow, giant blue, gregory bixler, high tech surfaces, iconic butterfly, industrial powder, jo mcculty, medical equipment, micrometer scale feature, microscopic texture, morpho butterfly, morpho didius, nano channel, Nanotechnology, Nature, ohio, ohio state university, oriza sativa, pipelines, plastic surface, rice leaves, silicon carbide powder, south american, watercraft, wings

COLUMBUS, Ohio – A South American butterfly flapped its wings, and caused a flurry of nanotechnology research to happen in Ohio.

Researchers here have taken a new look at butterfly wings and rice leaves, and learned things about their microscopic texture that could improve a variety of products.

For example, the researchers were able to clean up to 85 percent of dust off a coated plastic surface that mimicked the texture of a butterfly wing, compared to only 70 percent off a flat surface. (more…)

Oil Spill Cleanup: Smart Filter Can Strain Oil Out of Water

By Guest PostAugust 30, 2012Environmentanish tuteja, arun kota, canola oil, capillary action, chemical detergent, cleanup, configuration, cosmetics industry, crude oil, deepwater horizon, emulsion, filter, fuel application, gibum kwon, gravity, hydrogen bond, mayonnaise, michigan, microscope, mixture, natural substance, novel nanoparticle, oil purification, oil spill, oleophobic, polyester fabric, polymer, rubbery, solution, surface tension, ultraviolet light, university, wastewater treatment, water, waterway, window screen

ANN ARBOR, Mich.— A smart filter with a shape-shifting surface can separate oil and water using gravity alone, an advancement that could be useful in cleaning up environmental oil spills, among other applications, say its University of Michigan developers.

The system could provide a more efficient way to remove crude oil from waterways without using additional chemical detergents, or even after detergents have been added, said Anish Tuteja, an assistant professor of materials science and engineering. Tuteja is the corresponding author of a paper on the research published in the Aug. 28 issue of Nature Communications.

The researchers created a filter coating that repels oil but attracts water, bucking conventional materials’ properties. Most natural substances soak up oil, and the few that repel it also repel water because water has a higher surface tension. (more…)

Ethanol Mandate Not the Best Option

By Guest PostFebruary 14, 2012Economy, Environmentamerican coalition, amount of pollution, consumers value, corn based fuel, crude oil, e85, environmental economics, ethanol, ethanol price, gasoline, government mandate, michigan state university, per gallon, price of gas, protect the environment, renewable fuel, soren anderson, taxed fuel, united states

EAST LANSING, Mich. — Many people are willing to pay a premium for ethanol, but not enough to justify the government mandate for the corn-based fuel, a Michigan State University economist argues.

Soren Anderson studied the demand for ethanol, or E85, in the United States. He found that when ethanol prices rose 10 cents per gallon, demand for ethanol fell only 12 percent to 16 percent on average. (more…)

Commentary in Nature: Can Economy Bear What Oil Prices Have in Store?

By Guest PostJanuary 27, 2012Economy, Environmentalternative sources, crude oil, crude oil production, david king, economic pain, fossil fuel, global climate change, global economic growth, global economy, global warming, industry e mails, internal documents, international monetary fund, james w murray, Nature, oil companies, oil supply, policy makers, sandra hines, shale gas, tar sands, tipping point, united kingdom, university of oxford, university of washington, use, wells, world war II

Stop wrangling over global warming and instead reduce fossil-fuel use for the sake of the global economy.

That’s the message from two scientists, one from the University of Washington and one from the University of Oxford in the United Kingdom, who say in the current issue of the journal Nature (Jan. 26) that the economic pain of a flattening oil supply will trump the environment as a reason to curb the use of fossil fuels.

“Given our fossil-fuel dependent economies, this is more urgent and has a shorter time frame than global climate change,” says James W. Murray, UW professor of oceanography, who wrote the Nature commentary with David King, director of Oxford’s Smith School of Enterprise and the Environment. (more…)

USGS Oil and Gas Resource Estimates Updated for the National Petroleum Reserve in Alaska (NPRA)

By Guest PostOctober 26, 2010Economy, General3 d seismic survey, alaska, conventional gas, crude oil, gas, giant alpine field, marcia mcnutt, national petroleum reserve, npra, oil, oil exploration, petroleum, reservoir, reservoir rocks, U.S. Geological Survey, undiscovered oil

The U.S. Geological Survey estimates 896 million barrels of conventional, undiscovered oil and 53 trillion cubic feet of conventional, undiscovered non-associated gas within NPRA and adjacent state waters. The estimated volume of undiscovered oil is significantly lower than in 2002, when the USGS estimated there was 10.6 billion barrels of oil. The new estimate, roughly 10% of the 2002 estimate, is due primarily to the incorporation of new data from recent exploration drilling revealing gas occurrence rather than oil in much of NPRA. (more…)

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