By Syris Valentine for Grist.
Broadcast version by Suzanne Potter for California News Service, reporting for the Solutions Journalism Network-Public News Service Collaboration

When the sharing economy took off in the 2010s and upended entire industries, the firmest proponents of the model heralded it as an economic revolution that would help slash emissions. Of all the ideas that emerged and dissolved over the years, shareable electric scooters seemed to possess the most promise for climate. Almost anyone with a smartphone and a credit card could grab one and ride it down the block or across town, eschewing automobiles.

Yet, as the industry matures and Lime - which, with operations in 280 cities worldwide, is the biggest player - moves further into its eighth year, researchers have shown that the eco-friendly dreams of shared micromobility have not materialized without problems. The true climate benefits of these fleets depends upon how companies deploy and manage them, and safety remains a concern as injuries climb. But industry leaders appear intent on ensuring their scooters are as sustainable and safe as possible.

"It's really important as a company that has set a net-zero target by 2030," said Andrew Savage, Lime's head of sustainability, "that we walk the walk, and that we do everything we can to inspire the industries around us to decarbonize as well."

The sustainability of shared micromobility is an active area of research in a fast-changing industry. Ultimately, researchers see two factors that determine the overall climate impact of e-scooters: how users ride them, and how operators manage them from manufacturing to disposal.

A recent survey of the latest research questioned whether the sharing economy is inherently sustainable, including a particular look at e-scooters. The survey found many researchers were repeatedly concerned with the question: "If riders hadn't rented a scooter, how would they have gotten to their destination?" If someone would have walked instead of ridden, that person increased the emissions associated with that trip. But several studies, including one by the Portland Bureau of Transportation and another, funded by Lime, by a German research institute, have found that though anywhere from a third to well over half of scooter users would have walked instead, enough other trips that would have been taken by car were not. Shared scooters, on the whole, help reduce overall transportation emissions - often preventing 20 grams of CO2 emissions per mile ridden on a scooter.

The picture in urban landscapes, however, can get slightly more complicated when researchers consider how those providing the scooters retrieve them to charge, repair, or redistribute them to where people are likely to use them. Colin Murphy, director of research and consulting at the Shared Use Mobility Center, said that when operators use big cargo vans to manage their fleets, they can negate some of the emissions savings from users.

To address this, Savage said the company is improving its fleet logistics to reduce overall emissions. Lime's scooters and bikes are now equipped with larger, swappable battery packs, which means they need to be charged less often, and when they do, fleet workers can drive around with a trunk full of battery packs rather than taking the scooter back to a warehouse, effectively cutting logistics emissions in half while ensuring scooters are available more often. Savage said the company has also bought over 140 electric vans to support those operations. Though that's 10 times the number Lime had a few years ago, it's still only one van for every two cities it operates in.

Savage said Lime is also working to reduce its impacts in other ways. For instance, in North America, "once vehicles arrive at port," Savage said, "we are now using emissions-free trucking to get those to our distribution centers." Beyond that, the company has designed a modular bike that makes it easier to swap out damaged parts, and parts that are beyond repair are often sent for recycling. And it has worked with one company, Gomi, to salvage cells from partially damaged batteries for use in what it says are zero-waste Bluetooth speakers.

But perhaps the most concerning hurdle the industry faces is also the one over which it has, in reality, the least direct control: rider safety. One study, released earlier this year by researchers at the University of California, Los Angeles, found that from 2017 to 2020 serious injuries for scooter riders rose threefold, just as revenues for the scooter-sharing industry shot from $10 million to nearly $450 million. This trend only continued into 2021 and 2022, with micromobility injuries increasing an average of 23 percent every year. And these weren't just scrapes and bruises. The UCLA-led study found that scooter users were, compared to cyclists, more likely to end up with a broken arm or leg, require surgery, or even end up paralyzed. The researchers suspect that may be due, among other things, to riders often lacking safety gear.

Lime insists that it places safety first. But with most American cities designed to promote cars over all other forms of transit, the health of scooter users is, like those of pedestrians and cyclists, at risk once wheels hit pavement. Perhaps it should be no surprise that of the 30 people killed in 2018 while riding an e-scooter, 80 percent were struck by a car. This is why, if society wants to move away from cars as the default, Kailai Wang, who studies urban mobility at the University of Houston, believes urban areas need to invest in upgraded infrastructure like protected bike lanes that can make roads safer for non-automotive transport.

Of course, cars aren't the only dangers e-scooter users, like cyclists, face. Poor road and sidewalk conditions can lead to serious injuries. And sometimes riders are their own enemy. According to some studies, first-time riders and late-night riders face elevated risks. Murphy, said that these are two areas where scooter-sharing platforms and local policymakers can step in.

For instance, he said that operators could artificially limit the max speed of a scooter during a user's first few rides as they grow accustomed to the vehicle. In other cases, many cities prohibit e-scooter rides in the wee hours to prevent misuse. But "to the degree that these vehicles provide a real kind of transportation lifeline for some people," Murphy said, "that's almost when they're at their most important." For someone who ends a late shift after bus services end, an e-scooter might actually be their best, or only, means of getting home. This reality led the Chicago City Council, for example, to consider revising its own late-night prohibition.

As long as people have access to one of these vehicles when they need one, and a safe lane in which to ride it, shared micromobility can help cities move away from car-dependent transportation, slashing emissions in the process, by shifting transit from something material and energy-intensive to something low-impact and electric.


Syris Valentine wrote this article for Grist.


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New Mexico farmers finding it more difficult to grow historic crops are taking up conservation techniques to meet the challenge.

Drought, water scarcity, and extreme weather events combine to require growers to adopt new methods and modern tools.

John Idowu, extension agronomist specialist at New Mexico State University, shows farmers how to improve soil health and help control wind erosion. For long term success, he said they need to focus on sustainable, regenerative practices.

"How can I optimize my system and make it more resilient to climate change, to weather changes?" Idowu explained. "Once we have all those things worked out, farmers will tend to stay in business for longer."

Earlier this year, a NOAA satellite captured an image of winds lifting vast amounts of dust and dirt from New Mexico's dry farmlands. Some forecasters compared it to images last seen in the 1930s Dust Bowl.

Plowing agricultural fields annually was a common practice until the Dust Bowl period but in recent decades no-till or low-till farming operations have gained traction.

Bonnie Hopkins Byers, program director for the San Juan County Extension Service, encouraged New Mexico farmers to get a soil analysis and consider adopting the less aggressive approach. She said it could mean they do not need to till every year.

"One of the biggest problems is that people do something because that's the way they've always done it, or because it's the way their parents have done it, or their grandparents," Hopkins Byers acknowledged. "My philosophy has always been if you're going to till something over, till something in."

Intense dust storms known as "haboobs" were originally thought to be confined to Africa's Sudan but are becoming more common in other arid regions such as the Southwest.

Idowu stressed it makes the adoption of regenerative practices more urgent, as topsoil on New Mexico farmland disappears due to drought, land use changes and wind, which he noted has been particularly strong this year.

"The wind has been a major force, especially in the spring, so many days where you couldn't do anything outside because of the wind," Idowu observed. "You have a lot of dust and that means a lot of erosion and that is exactly what you don't like when it comes to crop production."

The New Mexico Healthy Soil Working Group formed to help farmers improve their land and livelihoods.


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By Carolyn Beans for Lancaster Farming.
Broadcast version by Mark Richardson for Keystone State News Connection reporting for the Lancaster Farming-MIT Climate Change Engagement Program-Public News Service Collaboration

At Mountain View Holsteins in Bethel, Pennsylvania, owner Jeremy Martin is always working to make his dairy more efficient.

Currently, he has his sights set on a manure solid-liquid separator. He'd like to use the solid portion of his manure as bedding for his 140 cows and the liquid as fertilizer.

But the project is pricey - he expects the equipment alone will run around $100,000. So Martin hopes to defray the cost through grant funding for dairy projects that reduce greenhouse gas emissions. Removing much of the solids from manure reduces the feed for the methane-producing microbes that thrive in the anaerobic conditions of liquid manure.

The approach is just one of many dairy practices now considered "climate-smart" because they could cut production of climate-warming gases.

For Martin, a manure separator wouldn't be possible without a grant.

"Once it's in place and going, I think some of these practices will pay for themselves, but the upfront cost is more than I can justify," he says. "If there's money out there to pay that upfront cost to get started, it makes sense to me to do it."

Across Pennsylvania, dairy farmers are learning more about climate-smart practices and funding opportunities, and weighing whether these changes are really sustainable for their businesses as well as the environment.

The Latest Buzzword

USDA has defined climate-smart agriculture as an approach that reduces or removes greenhouse gas emissions, builds resilience to the changing climate, and sustainably increases incomes and agricultural productivity.

"Before climate-smart was a thing, we called it conservation. We called it stewardship," says Jackie Klippenstein, a senior vice president at Dairy Farmers of America.

Indeed, long before the Food and Agriculture Organization of the United Nations coined the term "climate-smart agriculture" in 2010, Pennsylvania dairy farmers had adopted many of the practices that now fall under the label.

For dairy, climate-smart practices largely include strategies that reduce greenhouse gases emitted from cows, manure or fields. Tried and true conservation practices like cover cropping and reduced tillage count.

So do newer practices like using the feed additive Bovaer to reduce methane production in a cow's rumen, or precision nitrogen management to reduce nitrous oxide emissions from fields.

Paying for Climate-Smart

"Margins are very tight on the dairy farm," says Jayne Sebright, the executive director of the Center for Dairy Excellence, a public-private partnership to strengthen Pennsylvania's dairy industry. "Some of these (climate-smart practices) are good for the climate, but they don't make good economic sense until they're subsidized."

In 2022, the center joined a Penn State-run program called "Climate-smart Agriculture that is profitable, Regenerative, Actionable and Trustworthy" to provide dairy farmers with funds for switching to climate-smart practices.

CARAT was launched with a $25 million USDA Partnerships for Climate-Smart Commodities grant, but the future of the Pennsylvania project is in doubt. In April, USDA canceled the partnership program, suggesting that recipients reapply to a new USDA initiative called Advancing Markets for Producers.

Over 60 dairy farmers across Pennsylvania, including Martin, had already applied and been accepted into the first phase of CARAT. This initial phase was intended to help farmers identify the best climate-smart practices for their operations. In the second phase, farmers would have applied for funding to implement those practices. One farmer was already paid for his project before the USDA canceled the partnership program.

"There are fewer funding sources for climate-smart projects than in the last administration. However, private organizations and other entities are funding climate-smart projects," Sebright says. "Depending on what the practice is, (climate-smart) could also be conservation projects. It could be water quality projects."

Sebright suggests that dairy farmers also look for support through state-level funding, such as Pennsylvania's Resource Enhancement and Protection program, which offers tax credits for implementing practices that benefit farms and protect water quality.

Pennsylvania dairy farmers can also contact their county conservation districts to ask about funding opportunities for climate-smart projects, says Amy Welker, a project manager and grant writer for Pennsylvania-based Jones Harvesting, which operates Maystone Dairy in Newville and Molly Pitcher Milk in Shippensburg.

In the next year, Jones Harvesting plans to install a methane digester and solid-liquid separator at a site near Maystone Dairy. The digester is funded with an Agricultural Innovation Grant from the state and an Environmental Quality Incentives Program grant from USDA, along with private funds.

There's money out there for farmers who implement climate-smart practices, says Welker. But "you can't just look at one source."

Long-Term Payoffs

Ultimately, for climate-smart projects to make economic sense, they must continue paying for themselves long after the initial investment. One major goal of the USDA's Partnerships for Climate-Smart Commodities program was to develop markets where farmers adopting these practices could earn a premium.

Some dairy farmers might see that return in the carbon market. National checkoff organization Dairy Management Inc. and its partners have pledged to shrink the industry's net greenhouse gas production to zero by 2050. There are growing opportunities for companies working toward that goal in the dairy supply chain to pay farmers for their contributions.

Early last year, Texas dairy farmer Jasper DeVos became the first to earn credits through the livestock carbon insetting marketplace. DeVos earned carbon credits by reducing methane emissions with a feed protocol that included the feed additive Rumensin. Dairy Farmers of America then purchased those credits through Athian, a carbon marketplace for the livestock industry.

Increased Efficiency

Even without direct monetary payoff, many farmers who adopt climate-smart practices reap rewards in improved efficiency and productivity.

"When you look at climate-smart, you also have to look at what's farm smart," Sebright says. She suggests that farmers choose practices that benefit their farms, not just the climate.

A farmer might decide to put a cover and flare system on a manure pit, not only because it reduces methane emissions but also because it keeps rainwater out of the pit and reduces the number of times each year the pit must be emptied.

Andy Bollinger of Meadow Spring Farm in Lancaster County has been running a manure separator since 2009. The liquid fertilizes his fields, and a portion of the solids becomes bedding for his cows.

He estimates the system saves him at least $20,000 a year in bedding costs.

"We put a fresh coating of it onto the stalls that our cows lay in every day and scrape the old stuff out," says Bollinger, who is also the vice president of the Professional Dairy Managers of Pennsylvania. "It seems to work quite well, and it saves us from buying other bedding products."

No-till farming is also a cost saver because it reduces field passes with equipment, says James Thiele of Thiele Dairy Farm in Cabot, which has been 100% no-till for at least six years. The practice saves him money on fuel and herbicides.

"You're saving your environment, and you're also saving green," he says.

But Thiele questions whether some other climate-smart practices like methane digesters would be practical for his farm, which has 75 to 80 cows.

"I don't know if it'd be worth it for somebody as small as I am," he says.

"I think over the next few years, we'll rapidly see (climate-smart) tools become more available, and we'll see more organizations like DFA talking to our small to mid-sized farmers to make sure they understand they've got a place in this, they can benefit from it, and the practices and tools are affordable to them as well," Klippenstein says.

Weighing Climate-Smart

Many dairy farmers wonder whether some of the practices championed as climate-smart will really support their businesses.

Donny Bartch of Merrimart Farms in Loysville has adopted environmental practices from cover cropping to a manure management plan.

"I want to protect the environment. I want to keep my nutrients here on the farm and be sustainable for another five generations," Bartch says. "But we have to make sure that we're making the right decisions to keep the business going. And to do some of these (climate-smart) practices, the only way they pencil out is to have those subsidies."

There is also frustration with a system that rewards climate-smart improvements made today without acknowledging the contributions of farmers who were climate-smart before anyone put a name on it.

"You come around and want to start rewarding people for doing these things. You really need to start with the ones that have been doing it for a long time, but that's really not what happens," says Jim Harbach of Schrack Farms in Loganton, whose farm has been no-till for 50 years.

Climate-smart grant money and carbon credits are typically awarded for the implementation of new practices.

"It's just the unfortunate way that all of the policies and regulations were written," Sebright says. "What I would say is, if you do a climate-smart plan, maybe there are practices or things you can do to enhance or support or take what you're doing a step further."

Scientific Measurements on Real Farms

Some dairy farmers also want to know more about how climate-smart practices will affect their farms before jumping in.

Steve Paxton remembers participating in a government program to improve timber over 50 years ago on his family dairy, Irishtown Acres in Grove City. His family members were paid to climb up into their white pines and saw off many of the bottom branches.

The goal was to create a cleaner log. Instead, more sunlight shown through, which caused grape vines to climb up and topple the trees.

"The bottom line is, there was research done, it looked good, but it hadn't had enough time to follow through and see just really what the end results would be," Paxton says.

When Paxton sees estimates of how some practices might reduce greenhouse gases emitted from cows, he wonders how much of that research has been tested on actual dairies.

"I think some of it now is just kind of a textbook estimate of what's happening," he says.

More meaningful data is needed to show how climate-smart practices reduce greenhouse gases on individual dairies, Sebright says.

As part of the CARAT program, Penn State researchers planned to place greenhouse gas sensors on a dozen dairies and test how much greenhouse gas production falls as farmers experiment with different practices. The researchers intended to then use that data to build models that predict how those practices may affect emissions on other farms. They will still measure emissions this spring on one farm that is experimenting with a new approach for spreading manure in fields of feed crops.

"The real goal of (CARAT) is to have research that says, if you put a cover and flare (manure storage system) on a 500-cow dairy, this is how greenhouse gas emissions will change," Sebright says. "Or if you use Bovaer on a 90-cow herd, here's how this will affect greenhouse gas emissions."

Martin of Mountain View Holsteins has his own personal beliefs about where a dairy farmer's responsibilities to the planet begin and end. But from a business perspective, he feels compelled to adopt climate-smart practices because he expects the industry will eventually require them.

"Climate concerns are coming whether I'd like it or not," he says. "So my thought is, I might as well get started on it while there's funding to do it."


Carolyn Beans wrote this article for Lancaster Farming.


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Oregon's new state budget cuts funding for programs intended to protect residents from extreme weather and make renewable energy more accessible.

Climate justice advocates said it is a major setback after years of progressive climate policies.

Ben Brint, senior climate program director for the Oregon Environmental Council, is disappointed to lose funding for the Community Renewable Energy Grant Program, which supports a variety of projects tailored to communities, including microgrids and solar storage.

"We felt legislators didn't fund climate resilience programs while fires are raging, people's houses are burning down and the state has already experienced record heat waves in June," Brint pointed out. "Legislators don't see we are in an actual climate emergency and chose inaction."

Brint said the grant program aimed to help low-income, rural and communities of color, those most impacted by climate disasters. Lawmakers attributed the cuts to budget shortfalls and uncertainty over federal funding.

Joel Iboa, executive director of the Oregon Just Transition Alliance, said the Community Resilience Hub program, which creates networks as well as physical places to protect people from extreme cold, heat and smoke also lost funding this session. He argued the hubs are effective because communities design them to meet their unique needs.

"Whether it be a place to plug in your phone or a place to go get diapers or get an air conditioner or whatever your community may need," Iboa outlined. "Depending on what's going on."

A heat pump program for rental housing, aimed at making energy-efficient heating and cooling more affordable, was also cut this session.

Brint added he realizes legislators have to make tough decisions about how to fund health care and housing but emphasized climate change is connected to those issues.

"When we're talking about heat pumps or the C-REP program, we're talking about people's health and livelihoods and saving lives in the face of climate fueled disaster," Brint stressed.

Brint added since climate change is not going away, the movement to push for climate resilience will not either.


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