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By Marlene Cimons
Some day you may discover tomato peels and eggshells where the rubber meets the road.
The environment—not to mention your tires—will be better for it.
Researchers at Ohio State University have discovered that food waste, specifically tomato peels and eggshells, makes excellent filler for rubber tires, with tests showing they exceed industrial standards for performance. Filler is combined with rubber to make the rubber composite used in tires. Food waste could partially replace carbon black, the petroleum-based filler long used in tire manufacturing, which has become increasingly hard to come by.
This approach to manufacturing more environmentally-friendly materials complements ongoing efforts to develop sources of clean fuel. Using tomato peels and egg shells as tire filler could help reduce the nation's dependence on foreign oil, keep food waste out of landfills and make the production of rubber items—especially tires—more sustainable, according to Katrina Cornish, who holds an endowed chair in biomaterials at Ohio State University.
"If we hit a real shortfall in carbon black, we'll have to use something else," Cornish said. "You could use some nice eggshells. Many companies would like to have a green position and this is a good way to do that."
Food accounts for around one-fifth of the waste sent to landfills, according to the U.S. Environmental Protection Agency. Finding ways to keep food waste out of landfills not only saves space, but also helps in the fight against climate change. Bacteria turn food and yard trimmings found in landfills into methane, a potent greenhouse gas.
When properly processed, food waste can be used to generate energy, enrich the soil as a fertilizer or serve as a food source for animals. Now, it also could prove valuable in tire manufacturing.
Cornish has long been interested in developing new sources of rubber, as well as ways to enhance rubber products. So, when she came to Ohio State in 2010, she looked to food waste as a potential tire filler.
"I wrote to every food processor in the state and said: 'if you've got waste, we'd like to look at it,'" she said. "We received 35 different types of waste: batter drippings, sauerkraut juice, milk dust powder, among them—and eggshells and tomato peels. I'd always wanted to look at tomato peels because I spent a lot of time in California and would see all those produce trucks loaded with tomatoes and knew they had to have thick, tough skins so the ones on top didn't squash the ones on the bottom."
Initially, Cornish had doubts as to how well eggshells would work. Eggshells are composed largely of calcium carbonate, which is used as an extender, rather than a reinforcer. The latter is more useful as tire filler. But Cornish discovered to her delight that her doubts were misplaced. Eggshells have a porous architecture that provides a larger surface area for contact with the rubber and proved to be reinforcing.
"We were very excited," she said. "It added considerably more value than expected." They also found that tomato peels are very stable at high temperatures and can generate material that performs well.
"Fillers generally make rubber stronger, but they also make it less flexible," said Cindy Barrera, a postdoctoral researcher in Cornish's lab. "We found that replacing carbon black with ground eggshells and tomato peels caused synergistic effects, for instance, enabling strong rubber to retain flexibility."
It also turned the rubber reddish brown—depending on the amount of eggshell or tomato in it—rather than the black appearance that results from using carbon black. About 30 percent of a typical automobile tire is made of carbon black, the cost of which varies with petroleum prices. American companies most often purchase carbon black from foreign sources, according to Cornish.
"The tire industry is growing very quickly and we don't just need more natural rubber. We need more filler too," Cornish said. "The number of tires being produced worldwide is going up all the time, so countries are using all the carbon black they can make. There's no longer a surplus…"
Particles of tomato peels and eggshells used by to make rubber composite. Katrina Cornish
The U.S. produces around 80 billion eggs annually, according to the United Egg Producers. Cornish said that commercial food factories crack open half of them, then pay to send the remains to a landfill, where the mineral-loaded shells do not break down. "Nothing much happens to them in a landfill, since there are no calcium-eating animals," she said. "They are mostly rock."
The U.S. grows around 15 million tons of the ever-popular tomato, according to the Department of Agriculture. Most of that is canned or in processed products. When food companies make tomato sauce, for example, they peel and discard the skin, which is difficult to digest, she said.
Cornish is concerned about deforestation that results from planting new rubber trees and she has been researching rubber alternatives, including the rubber dandelion. While they are unmistakably dandelions, they are not the same as what many homeowners regard as annoying lawn and garden intruders.
Cornish explained that their leaves are thicker and bluer and the flowers are smaller. Most importantly, its taproot yields a milky fluid with natural rubber particles in it.
The rubber dandelion can be used to make tires. Biobased World
"The rubber dandelion comes from northwest China, Kazakhstan and Uzbekistan, but it can grow in snowy areas of Ohio," she said. "But it is not very sturdy, so we are trying to make it stronger and higher yielding." If successful, "it could grow as an annual crop and it could create many processing jobs," she added.
Meanwhile, Ohio State has licensed Cornish's technology for turning food waste into tire filler to her company, EnergyEne, for further development. Cornish stresses, however, that no one will start collecting "the eggshells from your breakfast," she said. "Kitchen waste is not going to go this way. So keep on with your compost piles. In fact, maybe you can use them to grow rubber dandelions."
Reposted with permission from our media associate Nexus Media.
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The depths of the oceans are heating up more slowly than the surface and the air, but that will undergo a dramatic shift in the second half of the century, according to a new study. Researchers expect the rate of climate change in the deep parts of the oceans could accelerate to seven times their current rate after 2050, as The Guardian reported.
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By Joni Sweet
Should you skip your annual checkup? The answer would have been a resounding "no" if you asked most doctors before the pandemic.
But with the risk of COVID-19, the answer isn't so clear anymore.
Are States Allowing Preventive Care Visits?<p>First things first: If you're experiencing a medical emergency, don't delay treatment.</p><p>While there's the potential that you could be <a href="https://www.cdc.gov/hai/data/portal/index.html" target="_blank">exposed to infections at the emergency room</a>, the health risks of avoiding urgent medical care could be far more severe.</p><p>Hospitals have also implemented precautionary measures, like distributing masks to patients, that help cut down the risk of viral exposure.</p><p>Now that that's out of the way, is it possible to start catching up on routine healthcare appointments, like physicals and dental cleanings?</p><p>"Different places are in different stages of opening up," said <a href="https://www.methodisthealth.org/doctors/arvind-ankireddypalli/" target="_blank">Dr. Arvind Ankireddypalli</a>, primary care physician and geriatrician at Methodist Le Bonheur Healthcare. "Preventative services might not even be available in some communities, [and in others] medical appointments may be on a case-by-case basis."</p>
Is it Safe to Go to the Doctor?<p>If your state is open (or will end its lockdown soon), you may be able to start booking preventive care appointments, like Pap smears, cancer screenings, checkups, and dental cleanings.</p><p>But is it worth the risk of possible exposure to the new coronavirus?</p><p>Opinions vary among healthcare providers and the conditions of their patients, as well as the infection rate in their communities and availability of personal protective equipment.</p><p><a href="https://www.lenhorovitz.com/" target="_blank">Dr. Len Horovitz</a>, internist, pulmonary specialist, and director of Carnegie Medical, recommends that patients avoid delaying their annual physical or other types of preventive care.</p><p>"You will encounter problems that are best seen earlier rather than later," he said. "It is possible to provide a safe environment for a patient in the doctor's office. There's no reason for people to put off an annual exam; these are important appointments that help keep problems from getting out of control."</p><p>In an effort to curb the spread of infection, Horovitz has been following a strict set of procedures at his office, including allowing just one patient in at a time, requiring patients to wear masks and gloves, and disinfecting the examination room between every patient.</p><p>Other physicians, like Ankireddypalli, conduct a risk-benefit analysis for every patient before agreeing to see them in person.</p><p>"It is probably not appropriate to keep delaying visits for high-risk patients, like older adults or people with chronic conditions," he explained.</p>
Role of Telehealth Visits<p>Telemedicine visits, where doctors connect with patients via phone or video chat, can be an option if in-person appointments are risky or prohibited.</p><p>The <a href="https://www.medicaid.gov/medicaid/benefits/downloads/medicaid-chip-telehealth-toolkit.pdf" target="_blank">Centers for Medicare & Medicaid Services</a> and some private insurance companies have expanded coverage for telehealth services during the pandemic. As a result, some practices have seen the <a href="https://www.healthcareitnews.com/news/during-pandemic-telehealth-visits-soar-10-week-300-group-practice" target="_blank">use of telemedicine services soar</a> over the last few months.</p><p>"Telemedicine is a way that patients can be seen, evaluated, counseled, and informed about their healthcare without being exposed to the dangers of going into lobbies and offices," said <a href="https://www.mayoclinic.org/biographies/ommen-steve-r-m-d/bio-20053861" target="_blank">Dr. Steve Ommen</a>, cardiologist and associate dean of the Mayo Clinic Center for Connected Care, which offers telemedicine services.</p><p>"It is particularly relevant for patients who already have a relationship with a provider, the appointment is for an ongoing care episode, and the patient doesn't need to be touched," he said.</p><p>A virtual doctor's visit can't be a substitute for all routine care, though. Cancer screenings, blood draws, evaluations of lumps, Pap smears, and other services still need to be done in person.</p><p>But even if you do have to go to the doctor's office, telehealth services can help cut down on the amount of time you spend there, thus potentially reducing your exposure to the new coronavirus and other germs.</p>
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Viral images of thousands of people eschewing the recommendations of medical experts and epidemiologists were on full display in the U.S. over Memorial Day weekend. In Missouri, St. Louis County officials called the images of crowds gathered at pool parties at bars and yacht clubs in the Lake of the Ozarks an "international example of bad judgment," according to The Washington Post.
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By Jeannette Cwienk
When it comes to recycling and recyclability, very little, it seems is straightforward — even something as seemingly simple as orange juice can present a conundrum. In Germany, many smaller shops sell drinks in cartons or plastic bottles, both of which will end up in the yellow recycling bin. But how do their recycling credentials stack up?
More and More Multilayer Packaging<p>How easy is it to recognize multilayer packaging? With drink cartons, it's usually obvious that they're made from a combination of different materials, but with other products, such as candy wrappers, it's a different story.</p><p>Such packaging can be made from a complex mix of up to 10 different films of plastic, which as Joachim Christiani, managing director of German recycling institute cyclos-HTP, explains, is <a href="https://www.dw.com/en/germany-produces-record-amount-of-packaging-waste/a-51293541" target="_blank">invisible to consumers</a>.</p><p>"In recent years there's been a trend toward so-called multilayer packaging, which is extremely light and thin. It saves material as well as CO2 emissions during transport, but can't be recycled," Christiani says.</p><p>Because it is not possible to melt the different plastics together, or — at least for now — to separate the individual films from one another at recycling plants.</p>
Lack of Recycled Plastic<p>A 2017 cyclos-HTP study into the recyclability of conventional packaging waste concluded that a third of it was not recyclable, and only 40% of the remaining two-thirds was made into plastic recyclate. The rest was used as fuel <em>—</em> in other words it was incinerated.</p><p>"There was no economic or political pressure to recycle more than this amount," Christiani says. "The prescribed recycling quotas were met, and there were not nearly enough recycling plants."</p>
Room for Greenwashing<p>According to a 2018 survey by Germany's vzbv consumer protection association, most consumers would like to see more plastic recycling, especially when it comes to packaging.</p><p>Although some products come in packaging that is advertised as being "made from recycled material," Elke Salzmann, a resource protection officer with vzbv, says that can be misleading.</p><p>"It says nothing about how much recycled material the packaging actually contains," according to Salzmann. "And it also doesn't mean that the recycled plastic comes from collected plastic waste. It could just as well come from plastic leftovers created during the production of primary plastic."</p><p>The term "ocean plastic," which some textile and shoe manufacturers use to advertise the recycled plastic in their product lines, can also be misleading, Salzmann says.</p><p><span></span>"Plastic waste from the ocean is in much too bad a state to be recycled. Instead, they use plastic waste from beaches or riverbanks."</p>
Laws Against Plastic<p>Images of garbage choking our waters and <a href="https://www.dw.com/en/eurythenes-plasticus-a-deep-sea-crustacean-full-of-plastic/a-52663559" target="_blank">killing marine wildlife</a> have played a key role in giving plastic a negative reputation among the public, and politicians have started to act.</p><p>Many countries worldwide have introduced bans on single-use items, and in Germany, a 2019 packaging law stipulates a plastics recycling quota of 90% from 2022, up from 36%. That said, the quota only refers to how much material has to be fed into the recycling system, not how much ultimately needs to be recycled.</p>
Rethinking the Whole System<p>Although plastic is a very useful material, at the end of its life it causes many problems, EASAC environmental program director Michael Norton tells DW, adding that we have to rethink the whole system and completely change the way we use plastic.</p><p>Joachim Christiani says the packaging industry is starting to catch on. Around 70% of recycled mass can currently be generated from packaging, but that figure is expected to rise in the future.</p><p>"95% is quite feasible," says the engineer, adding that sorting facilities are currently undergoing improvements, while packaging design is also changing.</p>
Clear Plastics Are Easiest to Recycle<p>As things stand, PET bottles are easiest to recycle because they're not mixed with other materials. New bottles can therefore easily be made from the old ones and the recycling rate is high. But the color of the bottle can pose a problem.</p><p>Because plastic is sorted by type rather than color, if different colors of plastic are mixed, the resulting recyclate cannot be used for light-colored packaging, which many manufacturers want. The upshot is the introduction of new plastic instead.</p><p>Consumer and environmental associations have long called for recyclability, greater sorting purity and better sorting facilities, but their most important demand remains waste avoidance through reusable systems.</p><p>"Why melt down disposable bottles to make new disposable bottles when you can refill them up to 20 times?" Buschmann asks.</p>
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When the coronavirus pandemic hit, the future of the Cannard Family Farm—whose organic vegetables supplied a single Berkeley restaurant—was looking stark.
Building Food Communities<p>Family farms in California and across the country have been hit hard by the impact of the coronavirus on their markets. But in the health-conscious Bay Area, where celery was already one of the first groceries to disappear from the produce rack, demand for fresh local produce has shot up. The challenge is in redirecting food from farms to new customers.</p><p>Sonoma County has historically been an agricultural region. When the organic food movement sprang up in the 1970s, this area was one of its early proponents. The first farmers markets and CSAs appeared in the 1980s and flourished, but the burgeoning network was later eclipsed by an inflated wine industry, much of it owned by distant corporations.</p><p>According to a 2018 crop report, 60,000 acres have gone to grapes, with only 500 acres in food crops. Land prices have skyrocketed, the cost of labor has gone up, and increased regulations have all made it harder to run a viable business here. Many farmers had turned to "boutique" specialty crops for restaurants.</p><p>"Farmers are always in an uphill battle, especially ecological farmers," says Wiig of the Community Alliance with Family Farmers. "I often hear them say, 'I'm working my butt off and hoping for the best.'" That's even more true now, as the pandemic strangles economies the world over.</p>
Scaling Up Support<p>F.E.E.D. Sonoma, a food hub that aggregates produce from dozens of local farms, was another quick responder. When the pandemic hit, it went from serving Bay Area restaurants to building a cooperative of farmers, filling food boxes for distribution at F.E.E.D.'s Petaluma warehouse and other drop spots in the county.</p><p>"Our local food system is extremely diverse," says co-founder Tim Page, who has the energy of a visionary combined with the skills of a businessman. "We have a ton of small farms but we don't have the infrastructure to support them. That is what F.E.E.D. is trying to establish." Since converting the restaurant supply business to a CSA, it has gone from 90 boxes to 450. Ultimately, the goal is 1,800 or more.</p><p>"I grew up in L.A.," Page says. "Every single farm is gone. The same thing will happen here if the general public does not understand the importance of it.</p><p>"That understanding was on display at the Sonoma Farmers Market, which now operates with strict restrictions and safety precautions because of the virus. "We think F.E.E.D. is going to save us," said Candy Wirtz, co-director of Paul's Produce, a well-established farm in Sonoma, as she weighed out my purchases. The CSA model could be transformative for Paul's and other farms across the country.</p><p>Subscribing to a CSA is a lifestyle change for consumers, to be sure. It means eating what's in season and learning to cook unfamiliar vegetables. But it's a change that many people are making now because of the stay-at-home orders. "People just have to learn to cook again instead of eating out," says Judith Redmond, part-owner of Full Belly Farm near Sacramento.</p><p>In light of this newfound commitment to CSAs, Perrotti, of Coyote Family Farm, says: "My hope is that this solidifies instead of going back to the way things were. I hope the importance of local farming stays at the forefront."</p>
Farms With Futures<p>To help small farmers stay in business during the crisis, Community Alliance is also advocating for stimulus dollars. "Most often subsidies go to a small number of the largest farms, or to buy food that goes to food banks from far away, while local farmers can't sell their food," Wiig says. "We want food banks to buy from local farms."</p><p>This seems like a win-win. Millions of tons of food is being plowed under as 60 million people are now going hungry, 17 million of them since the pandemic began, according to Feeding America, the national network of food banks.</p><p>But it's complicated. David Goodman of the Redwood Empire Food Bank puts it plainly: Local food is too expensive. "We distribute nine and a half million pounds of produce annually," he says. "It costs about 9 cents a pound, 3 cents to transport. With 82,000 people to feed, it would be a luxury to think of tending to local needs by buying locally."</p><p>That reticence is partly because the food bank system is tangled in bureaucracy. The USDA decides what to purchase and from where. Because of the distances between sites, the federal agency has tended to favor foods with long shelf lives, such as canned and processed foods, and long-lasting produce like apples and potatoes. "If local food is what we need, there has to be a plan," Goodman says.</p><p>Such a plan might be where short-term disaster relief meets long-term resilience. Michael Dimock is president of Roots of Change, a nonprofit organization that advocates for transforming California's food system. To get serious about preparing the food system for future disasters, Dimock says, the government needs to be involved. Roots of Change is now advocating for a tax on sugary beverages to help foot the bill.</p><p>Dimock says the state needs a paradigm shift for farms to remain viable in the face of multiplying disasters to come—not only pandemics, but fires, floods, and other symptoms of climate change. "How bold will people get in the months ahead to demand real change? My hope is they will get more radical."</p><p>Food is fundamental. While farmers have yet to face the full economic impact of this pandemic, their collaborative efforts, along with local grassroots networks, could mark the beginning of a new economy laboring to be born.</p>
By Andrea Germanos
Nearly 200 Canadian organizations on Monday rolled out their demands for a "just recovery," saying that continuing business-as-usual after the pandemic would prevent the kind of far-reaching transformation needed to put "the health and well-being of ALL peoples and ecosystems first."
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Alberta Energy Minister Calls Pandemic ‘a Great Time’ to Build Pipelines Due to Protest Restrictions
Anti-pipeline protests work.
That's the implication behind comments made by Alberta Energy Minister Sonya Savage Friday on how coronavirus social distancing requirements could ease the construction of Canada's controversial Trans Mountain Expansion project.