Pothole power for cars

Byoliveridley

Via the TNR E&E blog comes this story of capturing some of the energy wasted when a vehicle moves over bumps and potholes on the road. Indian drivers are waiting with bated breath for this prototype to become a reality! The takeaway messages are that most of the mechanical devices we use today have many points where waste energy can be captured and put to use.

A team of MIT undergraduate students has invented a shock absorber that harnesses energy from small bumps in the road, generating electricity while it smoothes the ride more effectively than conventional shocks. The students hope to initially find customers among companies that operate large fleets of heavy vehicles. They have already drawn interest from the U.S. military and several truck manufacturers.

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Duke Energy and Cliffside

Byoliveridley

NC Warn produces a good cheatsheet on Duke Energy‘s deceptions about the Cliffside coal fired power plant.

For more than a year, Duke Energy has tried to sell the idea that building a large coal-fired power plant near Charlotte would somehow be “good for the environment.” Following the January 29th state approval for construction to begin, the deception increased. By masking the new unit’s pollution behind upgrades already required by state law at an existing Cliffside furnace – and the retirement of four very small units that sit idle most of the time – Duke has misled the public, media and elected leaders into thinking that building a new unit will reduce a range of harmful emissions.

GreenscamAlert-AMythFactHandout

To summarize, CO2 emissions are set to increase significantly (factor of 12) if this plant is approved. So, in my book, this is a loser project that does not deserve even consideration. The facts are simple. This country is less than two years away from putting a price on carbon through some kind of carbon cap-trade scheme. All three major candidates for president support some kind of scheme, though McCain does not seem to know if the legislation he supports has an emissions cap or not (typical of him, he does not have any policy expertise or attention to detail whatsoever). So, the ground rules on what constitutes a cost effective option and what represents a major money making boondoggle are going to change very soon. Our state officials, thanks to the miracle of the internets, have all the knowledge to make a decision based on a reality that is coming soon. So, their reluctance to consider CO2 is puzzlingly short sighted. Duke Energy has some vague promises to sequester the carbon. But the fact of the matter is that the technology does not exist, and there’s no guarantee that it will exist any time soon in any cost effective fashion.

Even if you’re a big believer in the technology advances that will no doubt occur into the future, you have to admit that carbon emissions cannot be free any more. So, unless the federal government puts a price on the carbon, you cannot objectively support a project that will give these emissions away for free. Don’t tell me that Duke Energy will have to pay for the carbon it emits from Cliffside. It may have to, but it will pas all costs along to consumers and win anyway. So the tax payers of North Carolina are stuck with an expensive, dinosaur technology power generating option that is incredibly polluting for years to come. All because the state officials did not have the foresight to wait a year or two.

You can make the same argument for mercury. The current EPA “plan” for mercury is in tatters as it violates the clean air act. A change in administration (no McCain this time, only Clinton or Obama) is no doubt going to cause a tightening of mercury rules, a long overdue prospect. Why would the state approve a plan that would result in an increase in mercury emissions knowing fully well that federal regulation in this matter is unsettled? What ever happened to the conservative wait and watch approach?

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Majora Carter talks about Environmental Justice

Byoliveridley

[googlevideo=http://video.google.com/videoplay?docid=2883494385256707942]

Who is Majora Carter?

Majora Carter is a visionary voice in city planning who views urban renewal through an environmental lens. The South Bronx native draws a direct connection between ecological, economic and social degradation. Hence her motto: “Green the ghetto!”

With her inspired ideas and fierce persistence, Carter managed to bring the South Bronx its first open-waterfront park in 60 years, Hunts Point Riverside Park. Then she scored $1.25 million in federal funds for a greenway along the South Bronx waterfront, bringing the neighborhood open space, pedestrian and bike paths, and space for mixed-use economic development.

h/t the grist for bringing this incredibly powerful video to my attention.

The EJNet site is a great place to start if you want more information about Environmental Justice.

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Fish good for You? – this byline stinks

Byoliveridley

BBC NEWS | Health | Benefits of fish ‘outweigh risks’

Dariush Mozaffarian, lead author of the study said: “Overall, for major health outcomes among adults, the benefits of eating fish greatly outweigh the risks.

“Somehow this evidence has been lost on the public.”

Concerns have been raised about chemicals found in fish from pollution.

These include mercury, polychlorinated biphenyls (PCBs) and dioxins.

And in other news, “breathing is good for you”. Please, I can’t take this any more. The question is NOT, and NEVER WILL BE, “Is fish good for you?”. Of course it is. The question is: “What kind of fish is good for you, and whether appropriate labeling can help the consumer decide”.

At least in the US of A, which is where I have eaten the bulk of my fish, the primary source of information you can get about eating fish is on the web and for North Carolina, here. So, you’re supposed to go around with a checklist of good and bad fish in your head when you go to the grocery store. Most consumers do not have this kind of information, especially when there are so many categories to choose from. Is it fatty, or non? Is it freshwater or marine? Is it canned, fresh or frozen? Is it caught or farmed? Canned light tuna is okay, but canned albacore tuna is not, can you remember this when shopping for 30 other things at the store?

Confused enough? How about, tilefish at 3.99 a pound versus salmon at 7.99 a pound? What will you buy on a tight budget?

If you’re the average consumer, you have a minute to decide whether it’s fish for dinner, or something else, unless you’re carrying around this handy checklist in your hand/PDA (in which case you’re not the average consumer), you have two opposing thoughts in your head….

  1. I know that fish is good for me, so I need to eat more fish
  2. I know that certain fish is not good for me, especially if I’m pregnant/nursing/feeding kids – But I don’t know if this fish that’s on sale is on the safe list, or not.

What will you do given that you have one minute to decide, you have no information in the store, and you have no one in the store looking out for you?

And this paper wonders, and I paraphrase,

“Somehow this evidence has been lost on the public”

Labeling is important, information is power, if you’re buying fish, you want to know where it is from, what the average pollutant loadings of the fish from this area are, and what the advisory on this fish is, so you can make an informed choice in the one minute that you have. This has been widely researched, and the information is easily available (on the web, where you don’t shop for groceries). Is it too much to ask for a list to be posted wherever fish is sold? I guess it “hurts business”.

Personal responsibilty is accepted, but if you do not give people the tools to make informed choices, it’s just a cynical ploy to shift blame, shift burden, and shift risk.

This paper deserves to be read in full, so here’s the abstract. Needless to say, the study, funded in full by tax payer money through the National Heart Lung and Blood Institute, is behind a subscription wall.

Fish Intake, Contaminants, and Human Health

Evaluating the Risks and the Benefits

Dariush Mozaffarian, MD, DrPH; Eric B. Rimm, ScD

JAMA. 2006;296:1885-1899.

ABSTRACT

Context  Fish (finfish or shellfish) may have health benefits and also contain contaminants, resulting in confusion over the role of fish consumption in a healthy diet.

Evidence Acquisition  We searched MEDLINE, governmental reports, and meta-analyses, supplemented by hand reviews of references and direct investigator contacts, to identify reports published through April 2006 evaluating (1) intake of fish or fish oil and cardiovascular risk, (2) effects of methylmercury and fish oil on early neurodevelopment, (3) risks of methylmercury for cardiovascular and neurologic outcomes in adults, and (4) health risks of dioxins and polychlorinated biphenyls in fish. We concentrated on studies evaluating risk in humans, focusing on evidence, when available, from randomized trials and large prospective studies. When possible, meta-analyses were performed to characterize benefits and risks most precisely.

Evidence Synthesis  Modest consumption of fish (eg, 1-2 servings/wk), especially species higher in the n-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), reduces risk of coronary death by 36% (95% confidence interval, 20%-50%; P<.001) and total mortality by 17% (95% confidence interval, 0%-32%; P = .046) and may favorably affect other clinical outcomes. Intake of 250 mg/d of EPA and DHA appears sufficient for primary prevention. DHA appears beneficial for, and low-level methylmercury may adversely affect, early neurodevelopment. Women of childbearing age and nursing mothers should consume 2 seafood servings/wk, limiting intake of selected species. Health effects of low-level methylmercury in adults are not clearly established; methylmercury may modestly decrease the cardiovascular benefits of fish intake. A variety of seafood should be consumed; individuals with very high consumption (≥5 servings/wk) should limit intake of species highest in mercury levels. Levels of dioxins and polychlorinated biphenyls in fish are low, and potential carcinogenic and other effects are outweighed by potential benefits of fish intake and should have little impact on choices or consumption of seafood (women of childbearing age should consult regional advisories for locally caught freshwater fish).

Conclusions  For major health outcomes among adults, based on both the strength of the evidence and the potential magnitudes of effect, the benefits of fish intake exceed the potential risks. For women of childbearing age, benefits of modest fish
intake, excepting a few selected species, also outweigh risks.

Environmental Racism Strikes

Byoliveridley

If you had not been following this story previously, the NY Times finally mainstreams it.

Global Sludge Ends in Tragedy for Ivory Coast – New York Times

Over the next few days, the skin of his 6-month-old son, Salam, bloomed with blisters, which burst into weeping sores all over his body. The whole family suffered headaches, nosebleeds and stomach aches. How that slick, a highly toxic cocktail of petrochemical waste and caustic soda, ended up in Mr. Oudrawogol’s backyard in a suburb north of Abidjan is a dark tale of globalization. It came from a Greek-owned tanker flying a Panamanian flag and leased by the London branch of a Swiss trading corporation whose fiscal headquarters are in the Netherlands. Safe disposal in Europe would have cost about $300,000, or perhaps twice that, counting the cost of delays. But because of decisions and actions made not only here but also in Europe, it was dumped on the doorstep of some of the world’s poorest people.

“Dark tale of globalization”?? More like blatant disregard for non-white life, just saying…

Turning CO2 into plastic?

Byoliveridley

Interesting stuff…

Sifting the Garbage for a Green Polymer – New York Times

It was here that Dr. Coates discovered the catalyst needed to turn CO2 into a polymer.

With Scott Allen, a former graduate student, Dr. Coates has started a company called Novomer, which has partnered with several companies, including Kodak, on joint projects. Novomer has received money from the Department of Energy, New York State and the National Science Foundation. Dr. Coates imagines CO2 being diverted from factory emissions into an adjacent facility and turned into plastic.

Anthropogenic CO2 emissions = 7 Giga ton per year. So it will take a lot of plastics to take care of that. The promise of biopolymers is that they reduce the need for fossil fuels, and are biodegradable.

Seems to be another case where some funding and regulatory nudging away from the petroleum plastics would really help.

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PFOA emissions from Non stick cookware and Popcorn Bags

Byoliveridley

Important research coming out of NY. See here for previous PFOA posts. Perfluorinated compounds are used in the manufacture of Teflon, and are bioaccumulative. The theory is that the salts left over in the manufacture (residuals) are offgassing during use, and exposing consumers to bioaccumulative compounds.

Cast Iron, anyone!!

Quantitation of Gas-Phase Perfluoroalkyl Surfactants and Fluorotelomer Alcohols Released from Nonstick Cookware and Microwave Popcorn Bags

Fluoropolymer dispersions are used for coating certain cookware products and food-contact packaging to impart oil and water repellency. Since salts of perfluorooctanoic acid (PFOA) are used as a processing aid in the manufacture of many fluoropolymers, it is necessary to determine if these compounds are still present as residuals after the process used to coat nonstick cookware or packaging, and could be released during typical cooking conditions. In this study, we identified and measured perfluoroalkyl carboxylates (PFCAs), particularly PFOA, and fluorotelomer alcohols (FTOHs; 6:2 FTOH and 8:2 FTOH), released from nonstick cookware into the gas phase under normal cooking temperatures (179 to 233 C surface temperature). PFOA was released into the gas phase at 7-337 ng (11-503 pg/cm2) per pan from four brands of nonstick frying pans. 6:2 FTOH and 8:2 FTOH were found in the gas phase of four brands of frying pans, and the sources of FTOHs released from nonstick cookware are under investigation. We observed a significant decrease in gas-phase PFOA following repeated use of one brand of pan, whereas the other brand did not show a significant reduction in PFOA release following multiple uses. PFOA was found at >5 ng during the fourth use of both brands of pans. FTOHs were not found after the second use of either brand of pans. PFOA was found at 5-34 ng in the vapors produced from a prepacked microwave popcorn bag. PFOA was not found in the vapors produced from plain white corn kernels popped in a polypropylene container. 6:2 FTOH and 8:2 FTOH were measured in the vapors produced from one brand of prepacked microwave popcorn at 223 ± 37 ng and 258 ± 36 ng per bag, respectively, but not measured at >20 ng (LOQ) in the other two brands. On the packaging surface of one brand of microwave popcorn several PFCAs, including C5-C12, 6:2 FTOH, and 8:2 FTOH, were found at concentrations in the order of 0.5-6.0 ng/cm2. This study suggests that residual PFOA is not completely removed during the fabrication process of the nonstick coating for cookware. They remain as residuals on the surface and may be off-gassed when heated at normal cooking temperatures.

More later.