Mike Kemp / In Pictures / Getty Images
By Jodi Helmer
Your sourdough starter has terroir—and researchers at NC State University are determined to understand it. Its Sourdough Project collected 550 sourdough starters from around the world and analyzed the micro-organisms found in each sample to determine how the environment affects wild yeast and lactic and acetic acids that give the starter its unique flavor.
"There is this really cool thing happening where initially identical microbes evolve as they're sent out into different environments," explained Benjamin E. Wolfe, an assistant professor at Tufts University and part of the team working on the Sourdough Project at NC State. "The bacteria start to change, integrating foreign elements into their genomes really quickly."
The Massachusetts Institute of Technology (MIT) launched a similar citizen science project last spring, dubbed "The Herman Project." Researchers shared a sourdough starter, named Herman, with bakers and tracked its path from person to person to see how microbes change in different environments. To date, researchers have sent 150 starters to 10 countries; more than half have been returned to the MIT lab for analysis.
"We're starting to appreciate the role of whole communities of diverse micro-organisms, like the gut microbiome, and how microbes in the soil provide essential nutrients to the plant in agriculture," said Gabriel Leventhal, a postdoctoral fellow at MIT and founder of The Herman Project. "Fermented foods like sourdough are particularly interesting because, as humans, we have been cultivating these 'microbial communities' for thousands of years. There are many stories about sourdough starters that have been propagated for decades—even centuries—and handed down through generations, but we know very little about the internal composition of the microbial community. This is where The Herman Project comes in."
The initial results from both MIT and NC State show that the microbial makeup of a sourdough starter changes based on multiple factors in the environment—from elevation to temperature to a baker's skin—and it affects everything in the resulting bread, from aroma to flavor. It appears that the differences start in the field.
As part of a 2015 study, researchers grew wheat on one farm using four different farming methods (conventional, organic with cow manure, organic with green manure, and zero inputs) and found marked differences in the microbes in the flours. Farming methods also had an effect on the bread—breads made from organic flours had a superior crumb structure and crust color.
Wolfe calls this farm-to-ferment effect an important consideration when choosing flour for a sourdough starter. "Different kinds of flour create different microbial communities," he said.
Although researchers on The Sourdough Project have just started assessing the microbes in various starters, one controversial finding has emerged: "There is nothing unique about San Francisco sourdough—no unique microbial signature that we've found so far—that makes it any different from sourdough from Boston or Quebec," said Wolfe. "We're still looking."
Reposted with permission from our media associate Modern Farmer.
In a dramatic rescue captured on camera, a Florida man ran into a pond and pried open an alligator's mouth in order to rescue his beloved puppy, all without dropping his cigar.
- 'He had green eyes': Florida man will paint alligator that attacked him ›
- Florida alligator attack: A woman was attacked by a 10-foot alligator ... ›
- Weird presidential pets include alligator, tiger cub, dog named Satan ... ›
- Alligators make terrible pets: 'You're basically dealing with a dinosaur.' ›
EcoWatch Daily Newsletter
Jean-Marc Neveu and Olivier Civil never expected to find themselves battling against disposable mask pollution.
When they founded their recycling start-up Plaxtil in 2017, it was textile waste they set their sights on. The project developed a process that turned fabrics into a new recyclable material they describe as "ecological plastic."
Mounting Piles of Waste<p>It is not only the streets of Chatellerault where pandemic pollution is piling-up, but also the world's beaches and oceans. Once there, they can take up to 450 years to degrade and disappear.</p><p>Esther Röling, co-organizer of the annual Adventure Clean Up Challenge held on Hong Kong Island, has seen this waste firsthand. In October the sports challenge pitted teams against one another in a competition to remove trash from 13 hard-to-reach coastal areas around the city.</p><p>They find tons of both disposable and reusable masks, said Röling. "You wonder how it ended up there. Was it just thrown on the ground? Or was it in a garbage bag that broke open?"</p><p>Almost 10,000 kilometers away in Antibes on the sunny French Riviera, it's a similar picture. For the past few months, divers and clean-up volunteers working with an ocean clean-up non-profit called Operation Mer Propre have been collecting an increasing number of masks found on land and in the sea.</p><p>"Since the beginning of the lockdown when we started to count, we've reached 800, 900, [and now in total] 1000 masks," said co-founder Joko Peltier. </p><p>According to <a href="https://unctad.org/news/growing-plastic-pollution-wake-covid-19-how-trade-policy-can-help" target="_blank">UN estimates</a>, up to 75% of all coronavirus-related plastic could end up as waste in oceans and landfills.</p>
The Limits of Recycling<p>Yet not all are convinced the recycling of this waste is possible on a global scale. </p><p>"What those citizen groups are doing is really beneficial but once they collect it, it should just go to a landfill or an incinerator. They shouldn't necessarily expect it to get recycled," said Jonathan Krones, an industrial ecologist and visiting assistant professor of environmental studies at Boston College.</p><p>That's because mask recycling programs like Plaxtil are few and far between and most don't have the benefit of a readily adaptable production process. </p><p>Even in countries with solid recycling infrastructure, he says, the system is designed to separate out specific types of waste like bottles or cardboard.</p><p>"I imagine that it would be technically feasible to develop a separation process to filter out masks, but there simply aren't enough of them to make that economical," he said.</p><p>Collection is a big hurdle, he adds. Since each mask only weighs a fraction of a gram and they're scattered on roads or mixed with other trash, it is difficult and costly. </p><p>"You need a lot of raw material of the right quality to make investing in the recycling technology and the recycling system worthwhile," he said.<span></span><br></p>
Hemp, Sugar Cane and Sustainable Alternatives<p>Some projects are instead addressing the material used to make masks.</p><p>French company Geochanvre have created a mask made primarily from hemp, while in Australia, researchers at the Queensland University of Technology are experimenting with a disposable product made from agricultural waste. </p><p>Biodegradable options are exciting alternatives to reduce the fossil fuels needed for the creation of plastic-based masks, said Krones, but they don't absolve the wearer from the responsibility of what happens afterwards. </p><p>Bio-based masks often need their own composing solutions, he explains, because in landfill they can produce high amounts of the greenhouse gas methane when anaerobic bacteria feeds on the organic material. Methane is known to be significantly more potent than carbon dioxide.</p><p>"I think as long as we have in our mind that we want to have disposability, we're going to have to wrestle with a variety of different sorts of environmental tradeoffs," he said, adding that reusable, fabric masks are the best option available to most people.</p><p>Precimask is developing a clear face covering with an optional visor made from hard plastic, designed to be long-lasting.<br></p><p>Air enters either side of the cheeks through a technology normally found in pool filters and car exhaust systems, said company spokeswoman Juliette Chambet.</p><p>"We wanted to make ceramic-based filters that would be washable and cleanable, which would allow them to be reused as many times as desired without having to buy a new consumable or produce waste," she said. </p><p>Ultimately, encouraging mask wearers to think about the entire lifecycle of a mask is key, explains Neveu. </p><p>"We want people who put on the masks to realize that they are also responsible for the waste, he said. "It's not inevitable that this [pandemic] will become an environmental catastrophe.</p><p><em>Reposted with permission from </em><em><a href="https://www.dw.com/en/covid-19-recycling-pollution-trash-pandemic/a-55707817" target="_blank">Deutsche Welle</a>.</em><a href="https://www.ecowatch.com/r/entryeditor/2649032193#/" target="_self"></a></p>
- Coronavirus Plastic Waste Polluting the Environment - EcoWatch ›
- Scuba Divers Make Face Masks out of Recycled Ocean Plastic ... ›
By Bret Wilkins
In a year in which the United States has already suffered 16 climate-driven extreme weather events causing more than $1 billion in economic damages, and as millions of American workers face loss of essential unemployment benefits due to congressional inaction, a report published Monday reveals the Trump administration has given fossil fuel companies as much as $15.2 billion in direct relief — and tens of billions more indirectly — through federal COVID-19 recovery programs since March.
- 'We Need People's Bailout, Not Polluters' Bailout': Climate Groups ... ›
- Corporate Polluters Have Received Tens of Millions in PPP Loans ... ›
- Trump Bails Out Oil Industry, Not U.S. Families, as Coronavirus ... ›
- Former Federal Reserve Governor Rebukes Fed for Fossil Fuel Bail ... ›
By Ashia Aubourg
As Thanksgiving approaches, some Indigenous organizations and activists caution against perpetuating further injustices towards Native communities. Indigenous activist Mariah Gladstone, for example, encourages eaters to celebrate the harvest time in ways that do not involve stereotypes and pilgrim stories.
- Why Face Masks Belong at Your Thanksgiving Gathering + 7 Things ... ›
- Reasons to Be Thankful — 8 Food and Farm 'Good News' Stories ... ›
- Why I'm Going to Standing Rock for Thanksgiving - EcoWatch ›
By Alex Middleton
Losing weight and reducing fat is a hard battle to fight. Thankfully, there are fat burner supplements that help you gain your target body and goal. However, how would you know which supplement is right for you?