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You breathe in toxic chemicals too.

Byoliveridley

Behind a frigging pay wall, as usual! Kelly et al. argue in Science that hydrophobicity, the tendency to favor oil over water (to break it down to the simplest explanation) is not the only factor that explains biomagnification. The underlying theory used to be that compounds that can dissolve in water would swiftly degrade (either chemically or biologically) and not be of any concern to humans. Compounds like dioxins, PCB’s, DDT, etc. accumulated in fat tissue of aquatic animals and these were the compounds that would biomagnify through ingestion (eating!). Kelly et al. uncover another pathway that probably made every scientist go “D’uh”! – Apparently, chemicals animals breathe in can also bioaccumulate if they are not cleared efficiently by the lungs. So, air breathing cows, chickens and pigs can also cause significant bioaccumulation of certain compounds. Which ones? I guess you’ll have to pay to find out more, but this Scientific American article adds some context. Turns out, it is about 10000 chemicals, not all of them known to be harmful, but because they were never suspect, their metabolism is unknown.

Well, if anything, it will keep the biomonitoring folks busy for a while!

Chemical Consequences — 317 (5835): 165g — Science

Global regulators of commercial chemicals apply a scientific paradigm that relates the biomagnification potential of the chemical in food webs to the chemical’s hydrophobicity. However, Kelly et al. (p. 236; see the news story by Kaiser) show that current methods fail to recognize the food web biomagnification potential of certain chemicals. Certain chemicals do not biomagnify in most aquatic food chains, but biomagnify to a high degree in air-breathing animals, including humans, because of low respiratory elimination. Thus, additional criteria for evaluating biomagnification and toxicity in chemicals that biomagnify are required.

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  • US Senate Bill on Global Warming

    Byoliveridley

    Sanders, Leahy re-introduce Jeffords global warming bill – Boston.com

    “The good news is that we know how to address the problem. The bad new is that, for many years now, government policy has been totally inadequate,” Sanders said. “The forward-thinking legislation will put the United States on track to lead the way toward a cleaner future for all and I look forward to strong support as we push to protect our planet.”

    The bill was originally introduced in July of 2006, when it (predictably) went nowhere. Here is Sanders’ summary of the bill.

    The Global Warming Pollution Reduction Act calls for carbon dioxide (CO2) and other heat-trapping emissions to be reduced to 80 percent below 1990 levels by 2050.

    80% is the reduction called for in the Stern Review as well. The point is to stabilize global concentration at 450 ppm.

    It is still early to say what the prognoses in the Congress and Senate are, but one thing is sure, the US emperor will veto it. The point is, however, to establish this bill as the starting point of any negotiation/bargaining that will surely occur.

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    California Ban on Diacetyl?

    Byoliveridley

    Flavoring-Factory Illnesses Raise Inquiries – New York Times

    For a good background on flavoring-factory lung disease (formerly known as popcorn worker’s lung), check out the Pump Handle’s many posts, especially this recent one. Short primer, diacetyl is the chemical that gives popcorn its so called buttery taste (and smell, it’s fake!!). Well, there’s pretty good evidence that diacetyl causes bronchiolitis obliterans. Some symptoms…

    Bronchiolitis obliterans renders its victims unable to exert even a little energy without becoming winded or faint.

    “The airways to the lung have been eaten up,” said Barbara Materna, the chief of the occupational health branch in the California Department of Health Services. “They can’t work anymore, and they can’t walk a short distance without severe shortness of breath.”

    OSHA has been unwilling to seriously regulate diacetyl, so California, as it is wont to do, is considering banning this killer chemical.

    But in California, which has 28 flavoring plants known to use diacetyl, some legislators and government officials seem unwilling to wait. A bill to ban diacetyl in the workplace by 2010 has passed two committees in the State Assembly and could be taken up by the full body this summer. It is the first proposal of its kind in the nation. Assemblywoman Sally Lieber, the author of the bill, said she introduced it because of what she said was the slow response by the flavoring industry, which is largely self-regulating on occupational safety. “What we’ve heard is that the flavoring industry has known for years that this is potentially a problem, and they haven’t taken action,” said Ms. Lieber, a Democrat.

    I am all for California’s regulation. But as written, this law will only protect workers in California. They should also consider going one step further by restricting the use of diacetyl in food sold in California. Only then can the giant market that is California exert its influence on the diacetyl manufacturers and users.

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    Tuesdays with Turtles – Climate change and nesting patterns

    Byoliveridley

    Turns out that in Guyana, nesting patterns are changing. Different types of sea turtles are showing up, and earlier than they used to. The earlier part can be explained by climate change, but the species distribution? I am sure there are other factors involved including habitat loss, poaching, etc. Anyway, interesting story.

    Stabroek News

    The changing nesting patterns of endangered sea turtles in Guyana, is alerting environmentalists to the impact of climate change on these marine animals.

    The shell beaches in Region One have hosted thousands of nesting turtles over the years, and conservationists have been endeavouring to protect the turtles from heavy domestic use and from being traded.

    Project Coordinator of the Guyana Marine Turtle Conservation Society (GMTCS) Michelle Kalamandeen told Stabroek News recently that climate change is affecting the sea turtle population.

    According to Kalamandeen, in the 1960s the Hawksbill (critically endangered) and the Olive-Ridley (endangered) were our main nesting turtles, now the green turtles (endangered) and the leatherbacks (critically endangered) are mostly coming to nest on Guyana’s shores. The Pacific Leatherback is said to be now extinct and the Atlantic Leatherback is facing extinction.

    The change in the time period for nesting in Guyana, she said, may also be a significant sign.

    Usually sea turtles nest in Guyana from March to August every year. However, for the last three to four years, says Kalamandeen, the nesting pattern has shifted from mid-January to mid-July. This may have a significant impact on the hatchlings as food availability may be an issue for them.

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    Methane Leakage, again

    Byoliveridley

    In a sane world, we would be very concerned about measuring, reporting and closely regulating methane releases during its extraction and processing, especially if we claim that it is clean energy. This is nothing I, or other people haven’t said before, but here’s more research summarized in the very respectable Nature Journal indicating that measurable leak rates of methane can vary widely.

    Preliminary results from a field study in the Uinta Basin of Utah suggesting even higher rates of methane leakage — an eye-popping 9% of the total production. That figure is nearly double the cumulative loss rates estimated from industry data — which are already higher in Utah than in Colorado

    via Methane leaks erode green credentials of natural gas : Nature News & Comment.

    10% is a large number. I’ve posted this picture from Wigley (2011) previously. At any leakage rate other than zero, which no one claims, the benefits of switching from coal to methane are very modest.

    It's all about Methane leakage
    It’s all about Methane leakage
    We absolutely need to measure, control and regulate fugitive methane emissions from every BC site, and need to have solid regulation in place before we keep expanding natural gas infrastructure. We need our political leaders to start talking seriously about capturing methane leaks when they talk about BC’s natural gas “play”.

  • Update: Canada's Carbon Targets Survive

    Byoliveridley

    In a vote today, the Canadian Parliament voted to keep debate on Bill C-311 alive. The vote was 155-137. This is good news, though the bill likely faces an uncertain future even if it passes parliament, thanks to Canada’s nominated and recently conservative majority senate. It was heartening to see the liberals vote en masse in favour of realistic targets. I am also attaching in verbatim, an email received from Michael Ignatieff’s office this morning on the bill.

    On behalf of Michael Ignatieff, I would like to acknowledge receipt of your recent email regarding Bill C-311, The Climate Change Accountability Act.

    Mr. Harper is isolated on the environment – he’s behind the provinces and our peer countries when it comes to taking leadership on climate change and the environment, and has undermined international progress at every turn.

    The Liberals are taking the Harper Conservatives to task over their failure to commit to a principled environmental policy backed up by real action. We’re calling on the government to immediately put in place a national climate change plan with economy-wide regulations on emissions and strategic investments in renewable and clean energy.

    Michael Ignatieff and the Liberal Party are also supporting Bill C-311 as part of our staunch opposition to Mr. Harper’s laissez-faire approach to the environment and climate change. We support its central principle – that Canada needs to take immediate, ambitious action to get us back on track to reducing emissions and improving our renewable energy sources.

    We must be clear, however: Bill C-311 is not a climate change plan. It picks targets, but it does not lay out a plan on how Canada can reach those targets. That’s where it comes up short. The Liberal Party has put forward a credible, achievable climate and clean energy strategy that will create jobs and make our economy – and our country – one of the cleanest and most competitive in the world. Canada cannot afford to miss this opportunity.

    Thank you for taking the time to write the office of Michael Ignatieff on this important issue.

  • Environmental Justice Protest in Scotland County, NC

    Byoliveridley


    Scotland County Of Tomorrow

    As some of you might know, it is a well known fact that race is a predominant factor in the siting of landfills (warning, pdf, but worth it!!). But the folks at the North Carolina Environmental Justice Network (NCEJN) and its member organizations do a wonderful job in organizing, protesting, and lobbying against this egregious practice. If you’re in the neighborhood (or in the mood for a road trip), please do consider joining the protest.