Colorado Revs Up, Adopts Zero-Emission Vehicle Program
By Simon Mui
States across the country are stepping up to make clean cars cheaper and easier to find. Colorado's Air Quality Control Commission (AQCC) voted Friday to adopt a Zero Emission Vehicle (ZEV) program that will increase the availability of electric vehicles in the state, improve air quality and increase transportation affordability.
In doing so, Colorado joins together with ten other states that have already adopted ZEV programs and follows up on its adoption of state clean car requirements limiting emissions of greenhouse gases and criteria pollutants from all new passenger vehicles. All told, 30% of the U.S. vehicle market is now covered by a ZEV program.
The adoption is the latest rebuff to the Trump administration's proposed rollback to federal clean car standards, which Consumer Reports estimates will cost U.S. consumers $460 billion more at the gas pump. Governors from 24 states, including Colorado's Jared Polis, now oppose the rollback.
NRDC — as part of the broader Environmental Coalition that includes Western Resource Advocates, Environmental Defense Fund, Southwest Energy Efficiency Project and Sierra Club — provided comments supporting strong ZEV standards as good for the environment, good for consumers and good for Colorado. Some of the other supporting parties included the Environmental Justice Coalition, Colorado Communities for Climate Action representing 25 local governments and the Local Government Coalition.
Environmental Coalition's expert witnesses (Shannon Baker-Barnstetter, Chuck Shulock, Aaron Kressig, Gwen Farnsworth, John German, Chet France, Tom Bloomfield, Sarah Keane). Right to Left.
Coloradans and people across the country are excited about clean cars. They're passionate about clean air, having more electric vehicle options at dealerships and reducing their contributions to climate change. Here are three things that will happen in Colorado as a result of the ZEV program:
Consumers Will Have More Electric Vehicle Options at Dealerships
If we want more clean cars on the road, automakers will need to make more clean cars available to Colorado consumers. Period. While automakers offer 41 EVs in the U.S., it turns out Coloradans are not being provided with these choices. Based on a survey of all dealership inventories, a Denver customer would only be able to find 24 out of those 41 models. That number drops to just 16 models available in Fort Collins, seven in Colorado Springs, three in Pueblo and just two models in Grand Junction. Consumers face an EV desert in Colorado.
Source: Dealership inventory from Cars.com with assistance by NESCAUM.
A look at automakers' current advertising in Colorado reflects a similar story. Most automakers spent virtually nothing in Colorado on EV advertising or education for consumers compared to the tens of millions spent annually for gas-guzzling models they sell. Nissan appears to be a standout based on the data, but unfortunately, they are the lone exception rather than the rule.
With the adoption of the ZEV program, 4 to 5% of the vehicles that automakers deliver for sale to dealers would need to be EVs by 2025. We note that the sales level reflects the Commission's adoption of an alternative proposal developed by the Colorado Department of Energy and Department of Transportation, the Auto Alliance of Manufacturers and Global Automakers that provides a significantly easier path to meeting the original proposal, which would have required 7 to 8% sales by 2025.
While some automakers such as Nissan, BMW and Volvo are already exceeding the more modest 2025 requirements as of 2018, other automakers are far behind and not even making EVs available in Colorado, despite making them available elsewhere. Colorado's adoption will help push all automakers, especially laggards, to do more and will set up the state for even higher volumes after 2025.
Less Carbon Pollution and Improved Air Quality
Throughout the hearings, state government representatives, the Regional Air Quality Council and residents suffering from air pollution testified on the need to move toward electric transportation to help address air quality problems in Colorado, particularly in the Front Range. One of the benefits of the program is avoiding vehicles with internal combustion engines. EVs are the only technology that, once on the road, is projected to get cleaner over time as the electricity grid gets cleaner in Colorado. By comparison, emission controls from internal combustion engines can suffer from the impacts of deterioration, malfunction or even tampering — these events can lead to "super-emitters" on the road that emit 2 to 4 times more emissions when on the road than they are supposed to emit. EVs bypass this problem entirely because they don't have any tailpipe emissions.
All told, if EVs reach about 8% sales in Colorado, carbon pollution would be conservatively reduced by an estimated 2.2 million metric tons through model year 2030. Smog-forming pollutants would also be reduced.
All Consumers Benefit From EVs
Both primary and secondary buyers of EVs stand to see significant economic benefits from the ZEV program. With battery prices continuing to drop rapidly, the costs of EVs are projected to reach initial, up-front cost parity with gasoline internal combustion engines between 2024 and 2029 depending on the vehicle class, according to a study by ICCT. In terms of lifetime vehicle savings, EV drivers are expected to save between $3,200 and $12,000 depending on the vehicle class. Those savings are largely driven by significant reductions in fuel and maintenance costs.
Accelerating EV adoption with the ZEV program will benefit not only EV drivers but all residents in the form of downward pressure on rates. Two studies by MJ Bradley and Associates, commissioned by NRDC, show that adoption of EVs will lead to improved utilization of the electricity grid, especially since most EV charging occurs at night when there is spare capacity on the grid. An assessment of utility revenues in California from EV charging shows EV customers contribute much more to the grid than they cost from the grid. Regulated utilities are required to return that additional revenue to all utility customers in the form of lower rates and bills, as my colleague has blogged on here. A second study by MJ Bradley projects similar results for Colorado as it ramps up its EV fleet.
Clean cars mean cleaner air, which means fewer ozone days, easier breathing for Coloradans and a meaningful reduction in pollutants that contribute to climate change. But we won't see as much of these benefits without more zero-emission vehicles on the road. A Colorado ZEV program will have a meaningful impact by ensuring all automakers start making more EV products available to consumers.
Why Aren't School Buses Electric? These Coloradans Are Sick of Diesel https://t.co/wEb5Dla1R2— Enviro Voter Project (@Enviro_Voter) December 7, 2018
Simon Mui is a senior scientist in the Climate & Clean Energy program with the Natural Resources Defense Council.
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By Ana Maldonado-Contreras
- Your gut is home to trillions of bacteria that are vital for keeping you healthy.
- Some of these microbes help to regulate the immune system.
- New research, which has not yet been peer-reviewed, shows the presence of certain bacteria in the gut may reveal which people are more vulnerable to a more severe case of COVID-19.
You may not know it, but you have an army of microbes living inside of you that are essential for fighting off threats, including the virus that causes COVID-19.
How Do Resident Bacteria Keep You Healthy?<p>Our immune defense is part of a complex biological response against harmful pathogens, such as viruses or bacteria. However, because our bodies are inhabited by trillions of mostly beneficial bacteria, virus and fungi, activation of our immune response is tightly regulated to distinguish between harmful and helpful microbes.</p><p>Our bacteria are spectacular companions diligently helping prime our immune system defenses to combat infections. A seminal study found that mice treated with antibiotics that eliminate bacteria in the gut exhibited an impaired immune response. These animals had low counts of virus-fighting white blood cells, weak antibody responses and poor production of a protein that is vital for <a href="https://doi.org/10.1073/pnas.1019378108" target="_blank">combating viral infection and modulating the immune response</a>.</p><p><a href="https://doi.org/10.1371/journal.pone.0184976" target="_blank" rel="noopener noreferrer">In another study</a>, mice were fed <em>Lactobacillus</em> bacteria, commonly used as probiotic in fermented food. These microbes reduced the severity of influenza infection. The <em>Lactobacillus</em>-treated mice did not lose weight and had only mild lung damage compared with untreated mice. Similarly, others have found that treatment of mice with <em>Lactobacillus</em> protects against different <a href="https://doi.org/10.1038/srep04638" target="_blank" rel="noopener noreferrer">subtypes of</a> <a href="https://doi.org/10.1038/s41598-017-17487-8" target="_blank" rel="noopener noreferrer">influenza</a> <a href="https://doi.org/10.1371/journal.ppat.1008072" target="_blank" rel="noopener noreferrer">virus</a> and human respiratory syncytial virus – the <a href="https://doi.org/10.1038/s41598-019-39602-7" target="_blank" rel="noopener noreferrer">major cause of viral bronchiolitis and pneumonia in children</a>.</p>
Chronic Disease and Microbes<p>Patients with chronic illnesses including Type 2 diabetes, obesity and cardiovascular disease exhibit a hyperactive immune system that fails to recognize a harmless stimulus and is linked to an altered gut microbiome.</p><p>In these chronic diseases, the gut microbiome lacks bacteria that activate <a href="https://doi.org/10.1126/science.1198469" target="_blank" rel="noopener noreferrer">immune cells</a> that block the response against harmless bacteria in our guts. Such alteration of the gut microbiome is also observed in <a href="https://doi.org/10.1073/pnas.1002601107" target="_blank" rel="noopener noreferrer">babies delivered by cesarean section</a>, individuals consuming a poor <a href="https://doi.org/10.1038/nature12820" target="_blank" rel="noopener noreferrer">diet</a> and the <a href="https://doi.org/10.1038/nature11053" target="_blank" rel="noopener noreferrer">elderly</a>.</p><p>In the U.S., 117 million individuals – about half the adult population – <a href="https://health.gov/our-work/food-nutrition/2015-2020-dietary-guidelines/guidelines/" target="_blank" rel="noopener noreferrer">suffer from Type 2 diabetes, obesity, cardiovascular disease or a combination of them</a>. That suggests that half of American adults carry a faulty microbiome army.</p><p>Research in my laboratory focuses on identifying gut bacteria that are critical for creating a balanced immune system, which fights life-threatening bacterial and viral infections, while tolerating the beneficial bacteria in and on us.</p><p>Given that diet affects the diversity of bacteria in the gut, <a href="https://www.umassmed.edu/nutrition/melody-trial-info/" target="_blank" rel="noopener noreferrer">my lab studies show how diet can be used</a> as a therapy for chronic diseases. Using different foods, people can shift their gut microbiome to one that boosts a healthy immune response.</p><p>A fraction of patients infected with SARS-CoV-2, the virus that causes COVID-19 disease, develop severe complications that require hospitalization in intensive care units. What do many of those patients have in common? <a href="https://www.cdc.gov/mmwr/volumes/69/wr/mm6912e2.htm" target="_blank" rel="noopener noreferrer">Old age</a> and chronic diet-related diseases like obesity, Type 2 diabetes and cardiovascular disease.</p><p><a href="http://doi.org/10.1016/j.jada.2008.12.019" target="_blank" rel="noopener noreferrer">Black and Latinx people are disproportionately affected by obesity, Type 2 diabetes and cardiovascular disease</a>, all of which are linked to poor nutrition. Thus, it is not a coincidence that <a href="https://www.cdc.gov/mmwr/volumes/69/wr/mm6933e1.htm" target="_blank" rel="noopener noreferrer">these groups have suffered more deaths from COVID-19</a> compared with whites. This is the case not only in the U.S. but also <a href="https://www.washingtonpost.com/world/europe/blacks-in-britain-are-four-times-as-likely-to-die-of-coronavirus-as-whites-data-show/2020/05/07/2dc76710-9067-11ea-9322-a29e75effc93_story.html" target="_blank" rel="noopener noreferrer">in Britain</a>.</p>
Discovering Microbes That Predict COVID-19 Severity<p>The COVID-19 pandemic has inspired me to shift my research and explore the role of the gut microbiome in the overly aggressive immune response against SARS-CoV-2 infection.</p><p>My colleagues and I have hypothesized that critically ill SARS-CoV-2 patients with conditions like obesity, Type 2 diabetes and cardiovascular disease exhibit an altered gut microbiome that aggravates <a href="https://theconversation.com/exercise-may-help-reduce-risk-of-deadly-covid-19-complication-ards-136922" target="_blank" rel="noopener noreferrer">acute respiratory distress syndrome</a>.</p><p>Acute respiratory distress syndrome, a life-threatening lung injury, in SARS-CoV-2 patients is thought to develop from a <a href="http://doi.org/10.1016/j.cytogfr.2020.05.003" target="_blank" rel="noopener noreferrer">fatal overreaction of the immune response</a> called a <a href="https://theconversation.com/blocking-the-deadly-cytokine-storm-is-a-vital-weapon-for-treating-covid-19-137690" target="_blank" rel="noopener noreferrer">cytokine storm</a> <a href="http://doi.org/10.1016/S2213-2600(20)30216-2" target="_blank" rel="noopener noreferrer">that causes an uncontrolled flood</a> <a href="http://doi.org/10.1016/S2213-2600(20)30216-2" target="_blank" rel="noopener noreferrer">of immune cells into the lungs</a>. In these patients, their own uncontrolled inflammatory immune response, rather than the virus itself, causes the <a href="http://doi.org/10.1007/s00134-020-05991-x" target="_blank" rel="noopener noreferrer">severe lung injury and multiorgan failures</a> that lead to death.</p><p>Several studies <a href="https://doi.org/10.1016/j.trsl.2020.08.004" target="_blank" rel="noopener noreferrer">described in one recent review</a> have identified an altered gut microbiome in patients with COVID-19. However, identification of specific bacteria within the microbiome that could predict COVID-19 severity is lacking.</p><p>To address this question, my colleagues and I recruited COVID-19 hospitalized patients with severe and moderate symptoms. We collected stool and saliva samples to determine whether bacteria within the gut and oral microbiome could predict COVID-19 severity. The identification of microbiome markers that can predict the clinical outcomes of COVID-19 disease is key to help prioritize patients needing urgent treatment.</p><p><a href="https://doi.org/10.1101/2021.01.05.20249061" target="_blank" rel="noopener noreferrer">We demonstrated</a>, in a paper which has not yet been peer reviewed, that the composition of the gut microbiome is the strongest predictor of COVID-19 severity compared to patient's clinical characteristics commonly used to do so. Specifically, we identified that the presence of a bacterium in the stool – called <em>Enterococcus faecalis</em>– was a robust predictor of COVID-19 severity. Not surprisingly, <em>Enterococcus faecalis</em> has been associated with <a href="https://doi.org/10.1053/j.gastro.2011.05.035" target="_blank" rel="noopener noreferrer">chronic</a> <a href="https://doi.org/10.1016/S0002-9440(10)61172-8" target="_blank" rel="noopener noreferrer">inflammation</a>.</p><p><em>Enterococcus faecalis</em> collected from feces can be grown outside of the body in clinical laboratories. Thus, an <em>E. faecalis</em> test might be a cost-effective, rapid and relatively easy way to identify patients who are likely to require more supportive care and therapeutic interventions to improve their chances of survival.</p><p>But it is not yet clear from our research what is the contribution of the altered microbiome in the immune response to SARS-CoV-2 infection. A recent study has shown that <a href="https://doi.org/10.1101/2020.12.11.416180" target="_blank" rel="noopener noreferrer">SARS-CoV-2 infection triggers an imbalance in immune cells</a> called <a href="https://doi.org/10.1111/imr.12170" target="_blank" rel="noopener noreferrer">T regulatory cells that are critical to immune balance</a>.</p><p>Bacteria from the gut microbiome are responsible for the <a href="https://doi.org/10.7554/eLife.30916.001" target="_blank" rel="noopener noreferrer">proper activation</a> <a href="https://doi.org/10.1126/science.1198469" target="_blank" rel="noopener noreferrer">of those T-regulatory</a> <a href="https://doi.org/10.1038/nri.2016.36" target="_blank" rel="noopener noreferrer">cells</a>. Thus, researchers like me need to take repeated patient stool, saliva and blood samples over a longer time frame to learn how the altered microbiome observed in COVID-19 patients can modulate COVID-19 disease severity, perhaps by altering the development of the T-regulatory cells.</p><p>As a Latina scientist investigating interactions between diet, microbiome and immunity, I must stress the importance of better policies to improve access to healthy foods, which lead to a healthier microbiome. It is also important to design culturally sensitive dietary interventions for Black and Latinx communities. While a good-quality diet might not prevent SARS-CoV-2 infection, it can treat the underlying conditions related to its severity.</p><p><em><a href="https://theconversation.com/profiles/ana-maldonado-contreras-1152969" target="_blank">Ana Maldonado-Contreras</a> is an assistant professor of Microbiology and Physiological Systems at the University of Massachusetts Medical School.</em></p><p><em>Disclosure statement: Ana Maldonado-Contreras receives funding from The Helmsley Charitable Trust and her work has been supported by the American Gastroenterological Association. She received The Charles A. King Trust Postdoctoral Research Fellowship. She is also member of the Diversity Committee of the American Gastroenterological Association.</em></p><p><em style="">Reposted with permission from <a href="https://theconversation.com/a-healthy-microbiome-builds-a-strong-immune-system-that-could-help-defeat-covid-19-145668" target="_blank" rel="noopener noreferrer" style="">The Conversation</a>. </em></p>
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