June 2012
07/02/12Japanese tsunami debrisDear EarthTalk: Is there any environmental risk from all that Japanese tsunami debris that is starting to wash up on the U.S. west coast? —Bailey Thigerson, Seattle, WA The Japanese government estimates that some 1.5 million tons of debris is afloat in the Pacific Ocean as a result of the March 2011 earthquake, tsunami and nuclear disaster. No one knows exactly how much of this debris will wash up on American shores or end up absorbed by the water column or trapped in mid-ocean gyres, but state coastal authorities from California to Alaska are readying response plans. One certain threat is invasive species. Scientists from Oregon State University’s Hatfield Marine Science Center confirmed the presence of dozens of species native to Japanese coastal... Posted at 08:53 AM | Permalink | Comments |
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07/01/12Natural gas for automotive fuelDear EarthTalk: I recently saw an article extolling the virtues of natural gas as an abundant, inexpensive and domestically produced automotive fuel. Is this going to be the automotive fuel of the future and how green is it? —Jason Kincaide, New Bedford, MA It is difficult to say which of the growing number of fuel options will power the cars of the future. But natural gas, given its domestic abundance, low price and lesser carbon footprint, is certainly a contender, at least as far as researchers at the federally funded Argonne National Laboratory are concerned. Some of the same engineers there who developed the batteries now used in electric cars have been tasked with improving natural gas powered engine technologies, thanks to anticipated consumer demand for vehicles... Posted at 07:45 PM | Permalink | Comments |
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06/30/12Making renewable energies competitiveDear EarthTalk: Renewable energy production in the solar and wind markets currently receives about $7 billion in government subsidies annually, but is still not competitive against fossil fuels on a large scale. To what extent should the U.S. continue to prop up these industries as they compete against dirty energy? —Jack Morgan, Richmond, VA Given the importance of abundant amounts of energy for Americans, the federal government tends to subsidize all forms of energy development, including fossil fuels and renewables. A recently released report by the Congressional Budget Office (CBO) found that in 2011 the federal government spent $16 billion of our tax dollars in subsidies for the development of renewable energy and increased energy efficiency, and only $2.5 billion in... Posted at 04:39 PM | Permalink | Comments |
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06/24/12Clean air ambassadorsDear EarthTalk: Who are the “Clean Air Ambassadors” and what are they trying to accomplish? —Brenda Coughlin, Pittsburgh, PA Clean Air Ambassadors are everyday folks from across the U.S. who have committed to speaking up for everyone’s right to breathe clean, healthy air. The effort is part of the “50 States United for Healthy Air” campaign, a joint endeavor of Earthjustice, the American Nurses Association, the Hip Hop Caucus, the National Council of Churches and Physicians for Social Responsibility. In the spring of 2011 these Ambassadors—people from all 50 states and every walk of life—convened in Washington, D.C. to ask members of Congress, leaders at the U.S. Environmental Protection Agency (EPA) and high-ranking officials in... Posted at 05:17 PM | Permalink | Comments |
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06/19/12Curbing pollution from power plantsDear EarthTalk: I understand the Environmental Protection Agency recently took steps to limit pollution from power plants. What are the details? —Maddie Samberg, via e-mail In March 2012 the U.S. Environmental Protection Agency (EPA) proposed the first nationwide emission standards to limit carbon dioxide emissions from new coal- and gas-burning power plants. And while the operative word here is “new”—the standards would not apply to plants currently in operation or those that begin construction over the next year—they would effectively cut carbon emissions in half over the lifetime of a new power plant. According to the EPA, the standards reflect the ongoing trend in the power sector toward cleaner plants deploying the latest in American-made... Posted at 08:19 PM | Permalink | Comments |
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06/16/12Defining "sustainable communities"Dear EarthTalk: The term “sustainable communities” gets bantered around quite a bit today. Could you define it for me? —Holly Parker, Mechanicsburg, PA Kaid Benfield, Sustainable Communities program director at the Natural Resources Defense Council (NRDC), uses the term “sustainable communities” to describe places “where use of resources and emissions of greenhouse gases and other pollutants are going down, not up; where the air and waterways are accessible and clean; where land is used efficiently and shared parks and public spaces are plentiful and easily visited; where people of different ages, income levels and cultural backgrounds share equally in environmental, social and cultural benefits; where many needs of daily life can be met within... Posted at 02:18 PM | Permalink | Comments |
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06/12/12Greening a small businessDear EarthTalk: I own a small business and would like to do what I can to minimize its impact on the environment. Can you help me? —Jacob Levinson, New York, NY There are many ways to green up any business, large or small—and an added benefit might just be saving money. Just like individuals, businesses can measure their carbon footprints to get a sense of where they are starting from and to get some initial ideas of areas to focus on to reduce greenhouse gas emissions. The U.S. Environmental Protection Agency (EPA) offers a free “Simplified GHG [greenhouse gas] Emissions Calculator” to help small businesses get started. Another option is to enroll in TerraPass’s “Carbon Balanced Business” program, which helps commercial entities measure... Posted at 08:24 AM | Permalink | Comments |
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06/11/12Diesel pollutionDear EarthTalk: Diesel exhaust from trucks, buses, large ships and farm equipment is especially unhealthy. What progress has been made in curbing diesel pollution? —Jackie Mitchell, Barre, MA Gasoline-powered passenger cars plying American roads have been subject to strict pollution limits for some three decades already, but only recently have tougher standards for diesel-powered trucks, trains, barges and other soot-belching vehicles gone on the books across the country. Traditionally, older diesel engines produce less carbon dioxide per mile driven than gasoline-powered vehicles, but they produce more of the pollution associated with localized environmental trauma—such as smog and soot in the air—that can trigger respiratory and cardiovascular problems and... Posted at 02:20 PM | Permalink | Comments |
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06/04/12Knowing what pesticides are on your foodDear EarthTalk: How do I learn about what pesticides may be on the food I eat? —Beatrice Olson, Cleveland, OH Along with the rise in the popularity of organic food has come an increased awareness about the dangers lurking on so-called “conventionally produced” (that is, with chemical pesticides and fertilizers) foods. “There is a growing consensus in the scientific community that small doses of pesticides and other chemicals can have adverse effects on health, especially during vulnerable periods such as fetal development and childhood,” reports author and physician Andrew Weil, a leading voice for so-called integrative medicine combining conventional and alternative medical practices. He adds that keeping one’s family healthy isn’t... Posted at 06:40 AM | Permalink | Comments: 1 |
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06/03/12Wind turbines and bird conflictsDear EarthTalk: One of the objections to wind power has been that the turbines can kill birds. Has there been some progress in developing bird-friendly wind power? —Marcie Mahoney, Boston, MA Bird collisions have been one of the primary negatives of the recent growth in wind power across the United States and beyond. The U.S. Fish & Wildlife Service (USFWS) estimates that almost a half million birds are killed each year in the U.S. by wind turbines. “Birds can die in collisions with the turbine blades, towers, power lines, or related structures, and can also be impacted through habitat destruction from the siting of turbines, power lines, and access roads,” the non-profit American Bird Conservancy reports. “Some birds, such as sage-grouse, are... Posted at 06:46 AM | Permalink | Comments |