E.P.A. to Regulate greenhouse gases

Byoliveridley

The Environmental Protection Agency has moved to declare that greenhouse gases are pollutants that pose a danger to the public’s health and welfare. That determination, once made final, will pave the way for federal regulation of carbon dioxide, methane and other heat-trapping gases linked to global warming.

via NY Times

Of course, this action was required by a US Supreme Court decision on greenhouse gases last year and provides the regulatory side to the push that must come from congress.

There have been recent rumblings that the US Congress would shelve climate change for 2010. While this would please some Americans in the short term, the idea of the US going into the Copenhagen climate change conference without a GHG reduction plan out on the table leaves me very dispirited. The timing of the EPA’s announcement suggests that there might be some pressure from the EPA to get Congress to act. It is clear that the EPA does not have breadth of scope to pull of climate change regulation using a rule making process. Maybe if it starts trying, American politicians may get their act together.

Clutching at straws…

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  • PCBs love to sorb to oil

    Byoliveridley

    News of possible interest only to me. It seems obvious that oil present in sediment enhances sorption and storage of PCBs than soot/black carbon. After all, it is a liquid phase and is present in higher amounts than black carbon. PCBs are so hydrophobic that almost any organic material has a higher affinity for PCBs than water/sediment. Carbon is a strong PCB adsorbent only for planar PCBs, and then only if it is itself graphitic, hence planar. In all other cases, oil should outcompete  carbon for PCBs. Glad they found experimental evidence. In all my (three) years of analyzing for PCBs, the oily samples are always the highest concentration ones.

    Oil Is a Sedimentary Supersorbent for Polychlorinated Biphenyls

    Oil Is a Sedimentary Supersorbent for Polychlorinated Biphenyls

    Michiel T. O. Jonker and Arjan Barendregt

    Institute for Risk Assessment Sciences, Utrecht University, P.O. Box 80176, 3508 TD Utrecht, The Netherlands

    Received for review January 18, 2006

    Revised manuscript received April 10, 2006

    Accepted April 11, 2006

    Abstract:

    The often-observed enhanced sorption of hydrophobic organic chemicals (HOCs) to sediments is frequently attributed to the presence of soot and soot-like materials. However, sediments may contain other hydrophobic phases, such as weathered oil residues. Previous experiments have shown that these residues can be efficient sorbents for certain PAHs. In this study we investigated sorption of PCBs to sediments contaminated with different concentrations and types of oils, and from that derived oil-water distribution coefficients (Koil). Sorption of PCBs to both fresh and weathered oils was proportional to sorbate hydrophobicity, and no effects of PCB planarity were observed. Furthermore, the experiments demonstrated that different oils sorbed PCBs similarly and extensively (Koil up to 108.3 for PCB 169), and that weathering caused an almost 2-fold increase in sorption of the lower chlorinated PCBs. Koil values indicated that at the PCB equilibrium concentrations tested (pg-ng/L range), for many congeners weathered oil is a stronger sorbent than pure soot and soot-like materials. Due to attenuation of adsorption to the latter materials in sediments (caused by competitive adsorption with organic matter), sedimentary weathered oil will therefore, if present as a separate phase, defeat sedimentary soot, coal, and charcoal as PCB sorbent in most cases. Consequently, weathered oil probably is the ultimate sedimentary sorbent for PCBs and should be included in HOC fate models.

  • Gapminder -Visualize Global Development Data

    Byoliveridley

    I must have been living in a cave somewhere to not have heard of this before today.

    The Gapminder World 2006, beta

    Gapminder is a non-profit venture that develops information technology for provision of free statistics in new visual and animated ways. In short, it enables you to make sense of the world by having fun with statistics. Our method is to turn boring data into enjoyable interactive animations using Flash technology. Gapminder is a Foundation in Stockholm, Sweden. Funding has been mainly by grants from Swedish International Development co-operation Agency, Sida. In collaboration with United Nations Statistic Division we promote free access to searchable public data and our animations of different types of data are freely available at www.gapminder.org.

    The Pros
    You have to take it for a test drive to see how cool it is, especially the animations to see how parameters like life expectancy, population, etc. change over time. You can pick countries to compare, or just scatter plot everyone. Look at Botswana’s life expectancy, for instance, see it peak in 1987 at 65 years and start a steep  plummet to 35 years in 2004 as its AIDS mass murder (epidemic is a word that does do this one justice) took hold. To watch the dot for life expectancy drop that quickly as you animate it is pretty powerful, as powerful as a statistic can be. Each parameter you change also changes the URL, so you can send links easily.

    The Cons
    You have to plot something against something else. Not everything is a scatter plot between two variables, you use it long enough, and you start seeing correlations (=causations!) where none exist. There’s no way to extract plots to use for later, though I guess you can do a screen capture.

    Regardless, very cool, and nothing beats free access to large amounts of data that previously needed specialists to visualize and make sense of.

  • | |

    Chemical Warfare

    Byoliveridley

    This story from a local Chicago TV station does an excellent job of documenting the chemical weapons dropped on Vietnam by the United States in the 1960s, the effects they still have on Vietnam, and the Americans who handled these so called “defoliants”.

    cbs2chicago.com – Agent Orange: A View From Vietnam

    During the eight years of the Vietnam War that the U.S. Military dusted the Vietnamese landscape with Agent Orange, it was only intended to kill vegetation. It was a combination of two herbicides 2,4D and 2,4,5T mixed together into the most potent plant killer ever made. It was spread over 3 1/2 million acres of forests and crops to kill the trees and vegetation so the United States troops could see the enemy. The Armed Forces were told it was harmless. But in March 1978, Bill Kurtis broke the story on CBS 2 that American veterans of Vietnam who had been exposed to Agent Orange were complaining of illnesses, birth defects among their children, skin rashes, cancer, nervous problems and respiratory problems.

    orange3_small.jpgPeople tend to blame dioxins for all the health effects. But 2,4-D and 2,4,5-T, constituents of Agent Orange, are no spring chickens. Exposure during spraying, especially of the grossly excessive amounts that rained down upon Vietnam, can cause various health effects as well, not to mention long-term devastation of entire ecosystems.

    Side note: New Zealand, in 2004, apologized to New Zealand’s “veterans” for their exposure to Agent Orange during the Vietnam war. Not a word to the Vietnamese, of course.

    Side note 2: A US Federal court, in 2005, dismissed the first claims brought by Vietnamese plaintiffs against Dow Chemicals and Monsanto, here was the government’s  reasoning:

    In a brief filed in January, it said opening the courts to cases brought by former enemies would be a dangerous threat to presidential powers to wage war.

    Translation: We reserve the right to drop chemical weapons on our “enemies”, and doing anything to abrogate this right is “dangerous”.

    Image courtesy of Reuters shows a Vietnamese child, one of many with birth defects associated with Agent Orange exposure.

  • Rally for Climate Change Tomorrow in your Neighbourhood

    Byoliveridley

    So, to draw attention to the need to dial CO2 emissions down to 350 ppm, 350.org is organizing a series of worldwide events. This one is in my neck of the woods and I plan to be there. Go to the website to find out where yours is and show up. You will be part of the world’s largest climate change rally, 4500 events in 173 countries. Who knows, you might meet an interesting person or two, or the love of your life :-0 (hey, it’s happened before!)

    Victoria350.org is a collaboration of numerous community groups who are coming together to host FutureFest Victoria, a celebration to raise awareness around the number 350. There will be a kids corner with crafts, an art-based community visioning space, main stage music, a flash dance mob, local non-profit and community business tables, organic produce and coffee, topped off with a 350 bike ride downtown. Bring the whole family and come down for a fun and meaningful afternoon. All are welcome!

    via FutureFest Victoria | 350.org.

    FYI, the Victoria event is at Centennial Square tomorrow from 12-4.

  • |

    Oak Bay goes electric

    Byoliveridley

    Oak Bay has found the vehicles that fit its green policy and low speed limits — electric cars that top out at a maximum speed of 50 km/h.The municipality is drafting a bylaw that would allow electric cars on its public streets, making it possibly the first municipality in B.C. to take advantage of new provincial legislation that expands where the innovative vehicles can be driven.”I don’t think we’ll see any speed differences in Oak Bay just because we have slower-moving vehicles like electric cars,” Coun. Nils Jensen said yesterday of the impact on traffic movement in the notoriously slower-moving community.

    Oak Bay nears electric-car nirvana

     gv.gifFor those not in the know, Oak Bay is a municipality that is part of the Greater Victoria area. We have 11 separate municipalities, which makes for some serious inefficiencies and redundancy in administration, but does tend to preserve local character. Oak Bay, in my humble opinion, is insufferably British and proper, very wealthy and quite beautiful. And yes, it is a slow moving town, perfect for 50 kmph vehicles.

    But Oak Bay is not an island, it is flanked by Victoria and Saanich, and the boundaries are not always clearly demarcated. What’s going to happen when someone randomly wanders into Saanich?

    Except for the stretch of 17 going up to Sidney and the stretch of 1 going West and North out of the area, 50kmph ought to cover most of the area. I suspect Victoria will follow suit soon.

  • Acrolein Main Cigarette Culprit?

    Byoliveridley

    Chemical & Engineering News: Latest News – Cigarettes’ Smoking Gun?

    Acrolein, one of the 4,000 constituents of cigarette smoke, has been found unexpectedly to cause DNA damage in the gene for the infamous tumor-suppressor p53, which is often disrupted by cancer. In particular, the pattern of DNA mutations caused by acrolein mimics what is often found in human lung cancer samples (Proc. Natl. Acad. Sci. USA, DOI: 10.1073/pnas.0607031103).

    “If cigarette smoke is the weapon that causes lung cancer, then these mutations are fingerprints on the knife,” says author Moon-shong Tang of New York University School of Medicine, in Tuxedo. Tang was also involved in identifying another cigarette-smoke component that can induce such mutations: a metabolite of a polycyclic hydrocarbon called benzo[a]pyrene. Acrolein is present in cigarette smoke in levels of up to 1,000 times greater than benzo[a]pyrene.

    So, if you remove acrolein from tobacco smoke, does that make for a much safer smoking experience? Is this a research question worth answering? FYI, I watched Thank You for Smoking last night, so, fresh on my mind!

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