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Earth Talk Q & A

From The Editors of E/The Environmental Magazine

GOT AN ENVIRONMENTAL QUESTION? Send it to: EarthTalk, c/o E/The Environmental Magazine, P.O. Box 5098, Westport, CT 06881; submit it at: www.emagazine.com/earthtalk/thisweek/, or e-mail: earthtalk@emagazine.com. Read past columns at: www.emagazine.com/earthtalk/archives.php.



Is there any link between increased volcanic activity and global warming? PDF Print E-mail
Jun 19, 2010 at 06:21 PM

It’s impossible to pin isolated natural phenomena—like an individual volcanic eruption—on global warming, but some researchers insist that there is a correlation between the two in some instances.

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Is it true that the BP oil leak is much more of an environmental threat than previous spills from tankers, and if so why? PDF Print E-mail
Jun 08, 2010 at 11:56 AM

No one knows for sure how the ongoing oil catastrophe in the Gulf of Mexico will affect the deep sea ecosystem, but scientists are not optimistic. Oil from what is now considered the nation’s second largest spill, 1989’s Exxon Valdez mishap, slicked 11,000 square miles of ocean surface and 1,300 miles of pristine Alaskan coastline while killing hundreds of thousands of birds and marine mammals and untold numbers of fish and fish eggs.

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Are there ways to minimize fleas without resorting to chemical concoctions? PDF Print E-mail
May 09, 2010 at 09:02 PM

Americans spend some $1 billion each year on products designed to combat fleas. Many of these products do their jobs handsomely, but two of the most egregious chemicals widely used in flea collars, tetrachlorvinphos and propoxur, have been shown to cause damage to our brains and nervous systems, and are known human carcinogens. Residues containing these chemicals can stay on a pet’s fur—and whatever he or she rubs up against, including your rugs, furniture and children—for weeks on end.

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Are there ways to minimize fleas without resorting to chemical concoctions? PDF Print E-mail
May 09, 2010 at 04:04 PM

Americans spend some $1 billion each year on products designed to combat fleas. Many of these products do their jobs handsomely, but two of the most egregious chemicals widely used in flea collars, tetrachlorvinphos and propoxur, have been shown to cause damage to our brains and nervous systems, and are known human carcinogens. Residues containing these chemicals can stay on a pet’s fur—and whatever he or she rubs up against, including your rugs, furniture and children—for weeks on end.

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I’d like to know how to create a rooftop garden PDF Print E-mail
Oct 09, 2009 at 03:19 PM

Indeed there are many good reasons to build a rooftop garden, or a so-called “green roof”—whereby layers of soil and plants on top of homes and buildings provide a host of environmental “services” for the living space below as well as for the surrounding ecosystem. Unlike traditional roofs, green roofs thrive on (and filter) precipitation, decreasing the amount of pollution-laden stormwater run-off draining into our waterways. And thanks to the process of photosynthesis, the plantings create oxygen, cleanse the air and absorb carbon dioxide before it gets into the atmosphere and adds to our global warming woes.

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