The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Stronger Soot Standards Can Prevent 35,700 Deaths Annually
Up to 35,700 premature deaths can be prevented in the U.S. every year if the U.S. Environmental Protection Agency (EPA) strengthens the health standards for fine particulate matter—also known as soot—according to a new report, Sick of Soot: How the EPA Can Save Lives by Cleaning Up Fine Particle Pollution, prepared by the American Lung Association, Clean Air Task Force and Earthjustice.
Soot, technically known as PM2.5 (fine particulate matter with a diameter of 2.5 micrometers or less), is generated by coal-fired power plants, diesel and other vehicles, agricultural burning, wood stoves and industrial combustion. Though the pollution particles in soot are tiny—1/30th the width of a human hair—they can have a huge impact on human health. Research links them to premature death, heart attacks, stroke, worsened asthma and possibly cancer and developmental and reproductive harm.
The Clean Air Act requires that the EPA set national air quality standards for soot at levels that protect public health with a margin of safety. To adequately protect children, seniors and people with lung disease, heart disease, and diabetes from these dangers, Sick of Soot shows that the EPA should tighten the current standard to an annual level of 11 μg/m3 coupled with a daily standard of 25 μg/m3 and a daily level of 25 μg/m3 coupled with a daily standard of 25 μg/m3.
Cleaning up the air to meet the standards outlined above could spare the nation every year from as many as:
- 35,700 premature deaths
- 2,350 heart attacks
- 23,290 visits to the hospital and emergency room
- 29,800 cases of acute bronchitis
- 1.4 million cases of aggravated asthma
- 2.7 million days of missed work or school due to air pollution-caused ailments
The ten metropolitan areas that would benefit most are:
- Los Angeles-Long Beach-Santa Ana, Calif. – prevents 4,230 premature deaths annually
- New York-Newark-Edison, N.Y.-N.J.-Pa. – prevents 3,290 premature deaths annually
- Chicago-Naperville-Joliet, Ill.-Ind.-Wis. – prevents 2,240 premature deaths annually
- Philadelphia-Camden-Wilmington, Pa.-N.J.-Del.-Md. – prevents 1,550 premature deaths annually
- Riverside-San Bernardino-Ontario, Calif. – prevents 1,360 premature deaths annually
- Pittsburgh, Pa. – prevents 1,270 premature deaths annually
- Detroit-Warren-Livonia, Mich. – prevents 970 premature deaths annually
- Atlanta-Sandy Springs-Marietta, Ga. – prevents 930 premature deaths annually
- Cleveland-Elyria-Mentor, Ohio – prevents 780 premature deaths annually
- Cincinnati-Middletown, Ohio-Ky.-Ind. – prevents 650 premature deaths annually
The economic benefits associated with reduced exposure to soot are estimated to reach as much as $281 billion annually.
Concern about the health impacts of soot pollution is the reason that Earthjustice—on behalf of the American Lung Association, Environmental Defense Fund and National Parks Conservation Association—petitioned the U.S. Court of Appeals Nov. 16 for the D.C. Circuit to set a deadline for the EPA to issue stronger soot standards. In early 2009, the same court found that the EPA's current soot standards did not adequately protect public health and ordered the agency to update them. In the nearly three years since that decision, however, the EPA has yet to propose any new standards. A coalition of 10 states filed a companion petition with the court Nov. 16 as well.
The estimates in Sick of Soot come from Health Benefits of Alternative PM2.5 Standards—a report prepared by Donald McCubbin, Ph.D., a recognized expert on the health benefits associated with reducing air pollution who developed the Environmental Benefits Mapping and Analysis Program (BenMAP) for the EPA. The analysis in this detailed report was developed using the BenMAP model, the same program that the EPA uses in its own analyses of air pollution standards.
Proposal Long Overdue
The Clean Air Act directs the EPA to review the national standards every five years by taking into account the latest scientific research to ensure public health is adequately protected. The EPA has failed to meet that deadline and the Lung Association, National Parks Conservation Association and Earthjustice have begun legal steps to require the EPA to complete the review.
Since 2006, when the EPA completed its last review, new scientific data have emerged that clearly indicate soot still poses a major threat to public health. The current standards of 15 μg/m3 coupled with a daily standard of 25 μg/m3 (annual) and 35 μg/m3 coupled with a daily standard of 25 μg/m3 (daily) fail to provide that protection and must be strengthened.
"The EPA has the legal responsibility to follow science and the law and protect all Americans from harm caused by soot pollution," said Janice Nolen, assistant vice president, National Policy and Advocacy for the American Lung Association. "Soot is the deadliest of the widespread air pollutants and poses a huge risk to people who suffer from lung and heart disease. Kids, seniors, asthmatics and other vulnerable populations deserve the strong standards recommended by Sick of Soot."
"The findings detailed in Sick of Soot go beyond EPA's own analysis of this issue," said John Graham, Ph.D., a scientist at Clean Air Task Force. "We used more current air quality data and looked at the issue nationally, rather than just in the 15 urban areas that EPA typically examines. Because air quality has improved recently, the standards we are recommending should be easier for the nation to meet than might be predicted by the EPA's modeling. It's a win-win situation, and we hope the agency will strongly consider these findings as it makes its decision."
"Given the large number of lives at stake, it's clear that the EPA needs to act now," said Earthjustice attorney, David Baron. "Unfortunately, the agency has refused to respond to a 2009 federal court finding that its current standards fall far short of what scientists and doctors say is necessary to protect the public's health. It also just missed a five-year deadline for reviewing those deficient soot standards. The EPA needs to start moving in a different direction, and Sick of Soot points the way."
To download the report, click here.
For more information, click here.
American Lung AssociationNow in its second century, the American Lung Association is the leading organization working to save lives by improving lung health and preventing lung disease. With your generous support, the American Lung Association is “Fighting for Air” through research, education and advocacy. For more information about the American Lung Association, a Charity Navigator Four Star Charity and holder of the Better Business Bureau Wise Giving Guide Seal, or to support the work it does, call 1-800-LUNG-USA (1-800-586-4872) or visit www.Lung.org.
Clean Air Task Force is a nonprofit environmental organization with offices throughout the United States and in China that works to protect the earth’s atmosphere by improving air quality and reducing global climate change through scientific research, public advocacy, technological innovation and private sector collaboration. For more information please visit www.catf.us.
Earthjustice is a nonprofit public interest law firm dedicated to protecting the magnificent places, natural resources, and wildlife of this earth, and to defending the right of all people to a healthy environment. Learn more at earthjustice.org.
EcoWatch Daily Newsletter
By Tom Duszynski
The coronavirus is certainly scary, but despite the constant reporting on total cases and a climbing death toll, the reality is that the vast majority of people who come down with COVID-19 survive it. Just as the number of cases grows, so does another number: those who have recovered.
In mid-March, the number of patients in the U.S. who had officially recovered from the virus was close to zero. That number is now in the tens of thousands and is climbing every day. But recovering from COVID-19 is more complicated than simply feeling better. Recovery involves biology, epidemiology and a little bit of bureaucracy too.
How does your body fight off COVID-19?<p>Once a person is exposed the coronavirus, the body starts producing <a href="https://www.mblintl.com/products/what-are-antibodies-mbli/" target="_blank">proteins called antibodies to fight the infection</a>. As these <a href="https://www.statnews.com/2020/03/27/serological-tests-reveal-immune-coronavirus/" target="_blank">antibodies start to successfully contain the virus</a> and keep it from replicating in the body, symptoms usually begin to lessen and you start to feel better. Eventually, if all goes well, your immune system will completely destroy all of the virus in your system. A person who was infected with and survived a virus with no long-term health effects or disabilities has "recovered."</p><p>On average, a person who is infected with SARS-CoV-2 will feel ill for about seven days from the onset of symptoms. Even after symptoms disappear, there still may be small amounts of the virus in a patient's system, and they should stay <a href="https://www.cdc.gov/coronavirus/2019-ncov/if-you-are-sick/steps-when-sick.html" target="_blank">isolated for an additional three days</a> to ensure they have truly <a href="https://health.usnews.com/conditions/articles/coronavirus-recovery-what-to-know" target="_blank">recovered and are no longer infectious</a>.</p>
What about immunity?<p>In general, once you have recovered from a viral infection, your body will keep cells called lymphocytes in your system. These cells "remember" viruses they've previously seen and can react quickly to fight them off again. If you are exposed to a virus you have already had, your antibodies will likely stop the virus before it starts causing symptoms. <a href="https://dx.doi.org/10.5114%2Fceji.2018.77390" target="_blank">You become immune</a>. This is the <a href="https://www.ncbi.nlm.nih.gov/books/NBK27158/" target="_blank">principle behind many vaccines</a>.</p><p>Unfortunately, immunity isn't perfect. For many viruses, like mumps, immunity can wane over time, leaving you <a href="https://www.sciencedaily.com/releases/2016/04/160421145747.htm" target="_blank">susceptible to the virus in the future</a>. This is why you need to get revaccinated – those "booster shots" – occasionally: to prompt your immune system to make more antibodies and memory cells.</p><p>Since this coronavirus is so new, scientists still don't know whether people who recover from COVID-19 are <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/faq.html" target="_blank">immune to future infections of the virus</a>. Doctors are finding antibodies in ill and recovered patients, and <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-guidance-management-patients.html" target="_blank">that indicates the development of immunity</a>. But the question remains how long that immunity will last. Other coronaviruses like <a href="https://doi.org/10.1002/jmv.25685" target="_blank">SARS and MERS produce an immune response</a> that will protect a person at least for a short time. I would suspect the same is true of SARS-CoV-2, but the research simply hasn't been done yet to say so definitively.</p>
Why have so few people officially recovered in the US?<p>This is a dangerous virus, so the Centers for Disease Control and Prevention is being extremely careful when deciding what it means to recover from COVID-19. Both medical and testing criteria must be met before a person is <a href="https://www.cdc.gov/coronavirus/2019-ncov/hcp/disposition-in-home-patients.html" target="_blank">officially declared recovered</a>.</p><p>Medically, a person must be fever-free without fever-reducing medications for three consecutive days. They must show an improvement in their other symptoms, including reduced coughing and shortness of breath. And it must be at least seven full days <a href="https://health.usnews.com/conditions/articles/coronavirus-recovery-what-to-know" target="_blank">since the symptoms began</a>.</p><p>In addition to those requirements, the CDC guidelines say that a person must test negative for the coronavirus twice, with the <a href="https://www.cdc.gov/coronavirus/2019-ncov/if-you-are-sick/care-for-someone.html" target="_blank">tests taken at least 24 hours apart</a>.</p><p>Only then, if both the symptom and testing conditions are met, is a person officially considered recovered by the CDC.</p><p>This second testing requirement is likely why there were so few official recovered cases in the U.S. until late March. Initially, there was a <a href="https://www.nytimes.com/2020/03/18/health/coronavirus-test-shortages-face-masks-swabs.html" target="_blank">massive shortage of testing in the U.S.</a> So while many people were certainly recovering over the last few weeks, this could not be officially confirmed. As the country enters the height of the pandemic in the coming weeks, focus is still on <a href="https://www.cdc.gov/coronavirus/2019-nCoV/hcp/clinical-criteria.html" target="_blank">testing those who are infected</a>, not those who have likely recovered.</p><p>Many more people are being tested now that states and private companies have begun <a href="https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/testing-in-us.html" target="_blank">producing and distributing tests</a>. As <a href="https://www.dispatch.com/news/20200406/coronavirus-in-ohio-from-its-rocky-start-testing-for-covid-19-slowly-ramping-up" target="_blank">the number of available tests increases</a> and the pandemic eventually slows in the country, more testing will be available for those who have appeared to recover. As people who have already recovered are tested, the appearance of any new infections will help researchers learn <a href="https://www.statnews.com/2020/03/24/we-need-smart-coronavirus-testing-not-just-more-testing/" target="_blank">how long immunity can be expected to last</a>.</p>
Once a person has recovered, what can they do?<p>Knowing whether or not people are immune to COVID-19 after they recover is going to determine what individuals, communities and society at large can do going forward. If scientists can show that recovered patients are immune to the coronavirus, then a person who has recovered could in theory <a href="https://www.vox.com/2020/3/30/21186822/immunity-to-covid-19-test-coronavirus-rt-pcr-antibody" target="_blank">help support the health care system</a> by caring for those who are infected.</p><p>Once communities pass the peak of the epidemic, the number of new infections will decline, while the number of <a href="https://www.newsweek.com/china-says-passed-peak-coronavirus-epidemic-covid-19-1491863" target="_blank">recovered people will increase</a>. As these trends continue, the risk of transmission will fall. Once the risk of transmission has fallen enough, community-level isolation and social distancing orders will begin to relax and businesses will start to reopen. Based on what other countries have gone through, it will be <a href="https://www.nature.com/articles/d41586-020-00154-w" target="_blank">months until the risk of transmission is low</a> in the U.S.</p><p>But before any of this can happen, the U.S. and the world need to make it through the peak of this pandemic. Social distancing works to slow the spread of infectious diseases and <a href="https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/what-you-can-do.html" target="_blank">is working for COVID-19</a>. Many people will <a href="https://www.yalemedicine.org/stories/2019-novel-coronavirus/" target="_blank">need medical help to recover</a>, and social distancing will slow this virus down and give people the best chance to do so.</p>
By Elizabeth Claire Alberts
The future for the world's oceans often looks grim. Fisheries are set to collapse by 2048, according to one study, and 8 million tons of plastic pollute the ocean every year, causing considerable damage to delicate marine ecosystems. Yet a new study in Nature offers an alternative, and more optimistic view on the ocean's future: it asserts that the entire marine environment could be substantially rebuilt by 2050, if humanity is able to step up to the challenge.
- 3 Ways UN Leaders Can Restore the World's Oceans - EcoWatch ›
- We Still Have Time to Restore Our Climate. But the Climate Time ... ›
- Coral in Crisis: Can Replanting Efforts Halt Reefs' Death Spiral ... ›
Across the country, the novel coronavirus is severely affecting black people at much higher rates than whites, according to data released by several states, as The New York Times reported.
- New Drilling and Fracking in California Will Hurt Latino Communities ... ›
- First-of-Its-Kind Study Finds Racial Gap Between Who Causes Air ... ›
- Environmental Negligence vs. Civil Rights: Black and Hispanic ... ›
By Zulfikar Abbany
Bread has been a source of basic nutrition for centuries, the holy trinity being wheat, maize and rice. It has also been the reason for a lot of innovation in science and technology, from millstones to microbiological investigations into a family of single-cell fungi called Saccharomyces.
Chemical leavening<p>If you like a little heft in your loaf, you will need a leavening agent.</p><p>For those short on time, you can use baking soda. That's a chemical compound of sodium bicarbonate mixed with potassium bitartrate, or cream of tartar.</p><p>Soda breads have their traditions in parts of eastern and central Europe, and in Ireland and Scotland, with Melrose loaves and "farls."</p><p>They can taste a bit bland, though, and are often considered only as an emergency solution on Sundays. No disrespect intended: They taste just fine fresh from the oven.</p><p>Whether it's chemical or more "natural," leavening relies largely on the production of carbon dioxide.</p><p>When you mix an acid, such as vinegar, buttermilk, yogurt or apple cider, with an alkaline compound like baking soda, you get CO2. That CO2 creates bubbles, which in turn capture steam in the oven and allow a bread to rise.</p><p><span></span>But it's better with yeast. Tastes better, too. It just takes more time. </p>
What is yeast?<p>There are yeasts all around us — on grains, in the air, in biofuels. It even lives inside us, but that's not always a good thing.</p><p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1090575/pdf/1471-2334-5-22.pdf" target="_blank">Candida yeast</a> can cause infections of the skin, feet, mouth, penis or vagina if it builds up too much in the body.</p><p>One of the most common yeasts, however, is <em>Saccharomyces cerevisiae</em>. That's <a href="https://www.dw.com/en/an-early-beer-archaeologists-tap-ground-at-worlds-oldest-brewery/a-45480731" target="_blank">"brewer's"</a> or "baker's" yeast.</p><p>You can get fresh baker's yeast, often in 42-gram (1.48-ounce) cubes, or as dried yeast (quick action or active, which requires rehydration) in a sachet of 7 grams.</p><p>There's little difference: One is compressed and the other is dehydrated and granulated. But they do the same thing, essentially. </p><p>Some commercial yeast producers add molasses and other nutrients. But natural yeast has plenty of useful nutrients in it anyway, including B group vitamins, so who knows whether it's good or necessary to add them. </p>
How does yeast work?<p>When you mix flour, yeast and water, you set off a veritable chain reaction. Enzymes in the wheat convert starch into sugar. And the yeast creates enzymes of its own to convert those sugars into a form it can absorb.</p><p>The yeast "feeds" on the sugars to create carbon dioxide and alcohol. The yeast burps and farts, releasing gases into the mix, and that creates bubbles to trap CO2. </p><p>It's a vital fermentation process that breaks down the gluten in the flour and helps make your bread more digestible.</p><p>The yeast cells split and reproduce, generating lactic and carbonic acid, raising the temperature and ultimately adding flavor to the mix.</p><p>The longer you leave the yeast to do its thing, the better for your bread. Time is more important than the amount of yeast. </p><p>In fact, that's an enduring question — how much yeast? I'll use 20 grams fresh yeast for 500 grams of flour. Others say that's enough yeast for 1 kilo. If you are converting a dry-yeast recipe to fresh yeast, some bakers advise tripling the weight. So, if a sachet of dried yeast is 7 grams, your fresh yeast is 21 grams.</p><p><span></span>But that also depends on the flours you are using, temperatures in the bowl and the room, and a host of other things. You'll just have to experiment and see. No number of books (and I've read a stack on bread) will help as much as trial and error.</p>
Wild yeast: Sourdough<p>So, good bread needs time. If you have a lot of time, why not move it up a notch and grow wild yeast — a sourdough starter — in your own home?</p><p>A sourdough starter is not to be mistaken (as it often is) for the leaven, or "mother," "sponge," or <em>levain</em>. That's more a second stage, a descendant of the starter. You take a scoop from your starter and add it to another flour and water mixture when you prepare the dough for a new loaf. </p><p>The sourdough process utilizes yeasts naturally present in flour and … yet more time. A longer fermentation process allows a richer lactic acid bacteria <em>lactobacilli</em> or LAB to evolve, and that can be healthy for your gut microbiome.</p><p>It's simple enough to start a sourdough starter. All you need is flour, warm water and time.</p><p>Some suggest equal measures of whole-grain flour and water at 28 degrees Celsius (82 degrees Fahrenheit), some say room temperature — just don't let the water exceed 40 C or the yeasts will die. Some suggest two parts flour to three parts water. But it's up to you whether you want a drier or wetter starter. You will know only through experimentation. </p><p>Some say you should filter tap water to remove chemicals like fluoride and avoid using water that's boiled and then cooled. Others say that really doesn't matter.</p><p>The main thing is, keep it clean and give it time. Days, weeks, months and years.</p>
- The 7 Healthiest Types of Bread - EcoWatch ›
- This Home-Baked Bread Can Help You Rise Above Industrial Food ... ›
- How Does Sourdough Get Its Unique Flavor? - EcoWatch ›
- UN Biodiversity Chief: Humans Risk Living in an 'Empty World' With ... ›
- World Leaders Urged to 'Act Now' to Save Biodiversity - EcoWatch ›
- Why Biodiversity Loss Hurts Humans as Much as Climate Change ... ›