| Feb 16 @ 4:31 AM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash?
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Gentlegiant127
Posts: 1,037
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Is all this plastic polluting our oceans having detrimental effects on the health of human beings around the world? It would seem so. Here are some excerpts from the article:
The North Pacific gyre is only one of five such high-pressure zones in the oceans. There are similar areas in the South Pacific, the North and South Atlantic, and the Indian Ocean. Each of these gyres has its own version of the Garbage Patch, as plastic gathers in the currents. Together, these areas cover 40 percent of the sea.
Twenty-three countries, including Germany, South Africa, and Australia, have banned, taxed, or restricted the use of plastic bags because they clog sewers and lodge in the throats of livestock. Like pernicious Kleenex, these flimsy sacks end up snagged in trees and snarled in fences, becoming eyesores and worse: They also trap rainwater, creating perfect little breeding grounds for disease-carrying mosquitoes.
PBDEs, to take just one example, are used in many products, incuding computers, carpeting, and paint. As for phthalates, we deploy about a billion pounds of them a year worldwide despite the fact that California recently listed them as a chemical known to be toxic to our reproductive systems. Used to make plastic soft and pliable, phthalates leach easily from millions of products—packaged food, cosmetics, varnishes, the coatings of timed-release pharmaceuticals—into our blood, urine, saliva, seminal fluid, breast milk, and amniotic fluid. In food containers and some plastic bottles, phthalates are now found with another compound called bisphenol A (BPA), which scientists are discovering can wreak stunning havoc in the body. We produce 6 billion pounds of that each year, and it shows: BPA has been found in nearly every human who has been tested in the United States. We’re eating these plasticizing additives, drinking them, breathing them, and absorbing them through our skin every single day.
Most alarming, these chemicals may disrupt the endocrine system—the delicately balanced set of hormones and glands that affect virtually every organ and cell—by mimicking the female hormone estrogen. In marine environments, excess estrogen has led to Twilight Zone-esque discoveries of male fish and seagulls that have sprouted female sex organs.
On land, things are equally gruesome. “Fertility rates have been declining for quite some time now, and exposure to synthetic estrogen—especially from the chemicals found in plastic products—can have an adverse effect,” says Marc Goldstein, M.D., director of the Cornell Institute for Repro-ductive Medicine. Dr. Goldstein also notes that pregnant women are particularly vulnerable: “Prenatal exposure, even in very low doses, can cause irreversible damage in an unborn baby’s reproductive organs.”
“We now know that BPA causes prostate cancer in mice and rats, and abnormalities in the prostate’s stem cell, which is the cell implicated in human prostate cancer,” he says. “That’s enough to scare the hell out of me.” At Tufts University, Ana M. Soto, M.D., a professor of anatomy and cellular biology, has also found connections between these chemicals and breast cancer.
As if the potential for cancer and mutation weren’t enough, Dr. vom Saal states in one of his studies that “prenatal exposure to very low doses of BPA increases the rate of postnatal growth in mice and rats.” In other words, BPA made rodents fat. Their insulin output surged wildly and then crashed into a state of resistance—the virtual definition of diabetes. They produced bigger fat cells, and more of them. A recent scientific paper Dr. vom Saal coauthored contains this chilling sentence: “These findings suggest that developmental exposure to BPA is contributing to the obesity epidemic that has occurred during the last two decades in the developed world, associated with the dramatic increase in the amount of plastic being produced each year.” Given this, it is perhaps not entirely coincidental that America’s staggering rise in diabetes—a 735 percent increase since 1935—follows the same arc.
This news is depressing enough to make a person reach for the bottle. Glass, at least, is easily recyclable. You can take one tequila bottle, melt it down, and make another tequila bottle. With plastic, recycling is more complicated. Unfortunately, that promising-looking triangle of arrows that appears on products doesn’t always signify endless reuse; it merely identifies which type of plastic the item is made from. And of the seven different plastics in common use, only two of them—PET (labeled with #1 inside the triangle and used in soda bottles) and HDPE (labeled with #2 inside the triangle and used in milk jugs)—have much of an aftermarket. So no matter how virtuously you toss your chip bags and shampoo bottles into your blue bin, few of them will escape the landfill—only 3 to 5 percent of plastics are recycled in any way.
(continued below)
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| Feb 16 @ 4:39 AM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash? |
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Gentlegiant127
Posts: 1,037
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(part 2 of excerpts from the article)
“There’s no legal way to recycle a milk container into another milk container without adding a new virgin layer of plastic,” Moore says, pointing out that, because plastic melts at low temperatures, it retains pollutants and the tainted residue of its former contents. Turn up the heat to sear these off, and some plastics release deadly vapors. So the reclaimed stuff is mostly used to make entirely different products, things that don’t go anywhere near our mouths, such as fleece jackets and carpeting. Therefore, unlike recycling glass, metal, or paper, recycling plastic doesn’t always result in less use of virgin material. It also doesn’t help that fresh-made plastic is far cheaper.
Moore routinely finds half-melted blobs of plastic in the ocean, as though the person doing the burning realized partway through the process that this was a bad idea, and stopped (or passed out from the fumes). “That’s a concern as plastic proliferates worldwide, and people run out of room for trash and start burning plastic—you’re producing some of the most toxic gases known,” he says. The color-coded bin system may work in Marin County, but it is somewhat less effective in subequatorial Africa or rural Peru.
“Except for the small amount that’s been incinerated—and it’s a very small amount—every bit of plastic ever made still exists,” Moore says, describing how the material’s molecular structure resists biodegradation. Instead, plastic crumbles into ever-tinier fragments as it’s exposed to sunlight and the elements. And none of these untold gazillions of fragments is disappearing anytime soon: Even when
plastic is broken down to a single molecule, it remains too tough for biodegradation.
Truth is, no one knows how long it will take for plastic to biodegrade, or return to its carbon and hydrogen elements. We only invented the stuff 144 years ago, and science’s best guess is that its natural disappearance will take several more centuries. Meanwhile, every year, we churn out about 60 billion tons of it, much of which becomes disposable products meant only for a single use. Set aside the question of why we’re creating ketchup bottles and six-pack rings that last for half a millennium, and consider the implications of it: Plastic never really goes away.
all over the globe, there are signs that plastic pollution is doing more than blighting the scenery; it is also making its way into the food chain. Some of the most obvious victims are the dead seabirds that have been washing ashore in startling numbers, their bodies packed with plastic: things like bottle caps, cigarette lighters, tampon applicators, and colored scraps that, to a foraging bird, resemble baitfish. (One animal dissected by Dutch researchers contained 1,603 pieces of plastic.) And the birds aren’t alone. All sea creatures are threatened by floating plastic, from whales down to zooplankton. There’s a basic moral horror in seeing the pictures: a sea turtle with a plastic band strangling its shell into an hourglass shape; a humpback towing plastic nets that cut into its flesh and make it impossible for the animal to hunt. More than a million seabirds, 100,000 marine mammals, and countless fish die in the North Pacific each year, either from mistakenly eating this junk or from being ensnared in it and drowning.
Bad enough. But Moore soon learned that the big, tentacled balls of trash were only the most visible signs of the problem; others were far less obvious, and far more evil. Dragging a fine-meshed net known as a manta trawl, he discovered minuscule pieces of plastic, some barely visible to the eye, swirling like fish food throughout the water. He and his researchers parsed, measured, and sorted their samples
and arrived at the following conclusion: By weight, this swath of sea contains six times as much plastic as it does plankton.
This statistic is grim—for marine animals, of course, but even more so for humans. The more invisible and ubiquitous the pollution, the more likely it will end up inside us. And there’s growing—and disturbing—proof that we’re ingesting plastic toxins constantly, and that even slight doses of these substances can severely disrupt gene activity. “Every one of us has this huge body burden,” Moore says.
(part 3 of excerpts below)
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| Feb 16 @ 4:44 AM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash?
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Gentlegiant127
Posts: 1,037
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(part 3 of excerpts)
“You could take your serum to a lab now, and they’d find at least 100 industrial chemicals that weren’t around in 1950.” The fact that these toxins don’t cause violent and immediate reactions does not mean they’re benign: Scientists are just beginning to research the long-term ways in which the chemicals used to make plastic interact with our own biochemistry.
In simple terms, plastic is a petroleum-based mix of monomers that become polymers, to which additional chemicals are added for suppleness, inflammability, and other qualities. When it comes to these substances, even the syllables are scary. For instance, if you’re thinking that perfluorooctanoic acid (PFOA) isn’t something you want to sprinkle on your microwave popcorn, you’re right. Recently, the Science Advisory Board of the Environmental Protection Agency (EPA) upped its classification of PFOA to a likely carcinogen. Yet it’s a common ingredient in packaging(microwave popcorn bags) that needs to be oil- and heat-resistant. So
while there may be no PFOA in the popcorn itself, if PFOA is used to treat the bag, enough of it can leach into the popcorn oil when your butter deluxe meets your superheated microwave oven that a single serving spikes the amount of the chemical in your blood.
Other nasty chemical additives are the flame retardants known as poly-brominated diphenyl ethers (PBDEs). These chemicals have been shown to cause liver and thyroid toxicity, reproductive problems, and memory loss in preliminary animal studies. In vehicle interiors, PBDEs—used in moldings and floor coverings,
among other things—combine with another group called phthalates to create that much-vaunted “new-car smell.” Leave your new wheels in the hot sun for a few hours, and these substances can “off-gas” at an accelerated rate, releasing noxious by-products.
Green architect and designer William McDonough has become an influential voice, not only in environmental circles but among Fortune 500 CEOs. McDonough proposes a standard known as “cradle to cradle” in which all manufactured things must be reusable, poison-free, and beneficial over the long haul.
Oceanographer Curtis Ebbesmeyer, Ph.D., an expert on marine debris, “If you could fast-forward 10,000 years and do an archaeological dig…you’d find a little line of plastic,” he told The Seattle Times last April. “What happened to those people? Well, they ate their own plastic and disrupted their genetic structure and weren’t able to reproduce. They didn’t last very long because they killed themselves."
For the full article, click here
Link
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| Apr 12 @ 9:40 AM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash? |
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Gentlegiant127
Posts: 1,037
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Here is an update I found which is at least somewhat hopeful. Its dated october 11, 2006, sorry I haven't found anything more current.
Link
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| Jun 1 @ 12:43 AM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash?
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buni
Posts: 966
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This is very interesting.
(this is a little off this topic, but related in a way)
I read a while back about how they have found tons and tons of garbage on the beaches....I can't remember exactly how much, but it is horrible.
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| Jun 25 @ 10:32 PM |
An area of the pacific ocean twice the size of Texas clogged with plastic trash? |
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mystery2u888
Posts: 4,830
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