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Today's Top News
Melting Arctic Ice Releasing Banned Toxins, Warn Scientists
Unknown amount of trapped persistent organic pollutants poses threat to marine life and humans as temperatures rise
The warming of the Arctic is releasing toxic chemicals that had been trapped in the ice and cold water, scientists have discovered.
Melting Arctic ice is allowing chemicals to seep out, including the pesticides DDT, lindane and chlordane, as well as PCBs. (Photo: AlaskaStock/Corbis) The researchers warn that the amount of the poisons in the polar region is unknown and their release could "undermine global efforts to reduce environmental and human exposure to them".
The chemicals seeping out as temperatures rise include the pesticides DDT, lindane and chlordane as well as the industrial chemicals PCBs and the fungicide hexachlorobenzene (HCB). All of these are know as persistent organic pollutants (Pops), and are banned under the 2004 Stockholm convention.
Pops can cause cancers and birth defects and take a long time to degrade. Over past decades, the low temperatures in the Arctic trapped volatile Pops in ice and cold water. But scientists in Canada and Norway have discovered that global warming is freeing the Pops again. They examined measurements of Pops in the air between 1993 and 2009 at the Zeppelin research station in Svalbaard and Alert weather station in northern Canada.
After allowing for the decline in global emissions of Pops, the team showed that the toxic chemicals are being remobilised by rising temperatures and the retreat of the sea ice, which exposes more water to the sun. The scientists' work is published in the journal Nature Climate Change.
Hayley Hung, at the air quality research division of Environment Canada and one of the team, said their work provided the first evidence of the remobilisation of Pops in the Arctic. "But this is the beginning of a story," she said. "The next step is to find out how much is in the Arctic, how much will leak out and how quickly."
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Similarly, as the mountain glaciers have been melting, chemicals trapped in snow and ice have been making their way into the mountain lakes and environment.
Manysummits
====gee, i sure hope sombody opens a new boutique. i really want to be the first on my block sporting a new designer gas mask!
http://igloo.atmos.uiuc.edu/cgi-bin/test/print.sh?fm=07&fd=23&fy=2011&sm...
a very large portion of that record-setting ice area is only 50% ice.
Amurkans unquestioningly accept their high rates of autism and asthma as an industrial "cost of doing business" and will love taking more drugs for rising cancer rates and neurological disorders from these POPs. Ya can't make omelets without busting a few eggs, can ya?
Some savy posters told us to insert the brackets tag at the end of the sentence you want a paragraph to begin. I save the tag on my desk top and copy and paste it when I need it.
"Posted by pjd412 Jul 14 2011 - 2:44pm \ To insrt paragraph breaks, all you need to do is insert this: "< br >< br >" at the end of each paragraph - but with no spaces between the "<" or ">" symbols and "br". I inserted these so they would be visible."
It seems only some of the articles need this help, why is a mystery... CD does not explain anything and I wonder if they would say anything if they knew.
But really, the programmer can translate every {ENTER} into a <br>: for your convenience. But many of them are lazy or unsophisticated in their algorithms.
These are the escape codes for the HTML tag markers, the browser doesn't interpret them as HTML, it renders them as the character, instead.
I can't recall the escape code for "&" in that construct, nor do I want to spend then next 15 mins escaping escape codes ad nauseum, so I had to add a space to show you. But I'm sure a sophisticated audience can figure it out.
You can even make things BOLD or italic or underlined. You can even add pre-formatted text:
I didn't add any HTML tags to this text. But the browser includes all the line breaks anyway. And even changed the font to look like a typewriter..Oh that's right - away - wherever the hell that is.