LITTLE ROCK, Ark. - A crew of scientists from Columbia University's Lamont-Doherty Earth Observatory has been making its way through the Ozark Mountains, dodging snakes and poison ivy to study tree rings, to see how they're reacting to climate change.
In much of North America, research has shown climate warming is happening so quickly that trees can't adapt but that isn't the case in the south-central U.S., where temperatures haven't changed much yet.
Research professor Park Williams says some tree species will be more vulnerable than others.
"And if we can identify some species that do very well versus other species that do poorly in the warmth, then maybe we can understand how these tree species may respond in a future world where warming takes place," says Williams.
The team samples trees' yearly growth rings by hand-screwing a long, hollow drill bit into the trunk.
They then correlate the rings to the annual temperature and rainfall amounts in that area.
The project is in the early stages, and Williams says they're trying to secure funding to take it further.
He says it's important to know how trees are doing because when they die, they release large amounts of carbon into the atmosphere and that can warm the planet even further.
Williams calls the Ozarks "the perfect classroom."
"Anybody who's been on a walk in the Ozark Mountains or Smoky Mountains, there's well over 10 dominant tree species, and during summertime, every square inch of possible space is taken up by leaves," says Williams. "Every bit of sunlight is being utilized."
In the next phase of the study, Williams and his colleagues plan to sample hundreds of trees from central Kentucky to where the Great Plains begin.
Trees have started showing signs of the warming climate across the U.S.
Ponderosa pines in the Southwest, and aspens in Colorado, are being wiped out. In California, drought and wildfire could kill some 120 million trees. Williams says that's why this study is crucial.
"If you had one species that started doing really poorly, then very quickly you'd have another species benefit," he says. "And we're really interested in trying to learn who would be the 'winners' and who would be the 'losers' if we had a change in climate? Not just temperature, but if it got wetter because of increased rainfall, who would win and who would die?"
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A new report highlighted the growth of Pennsylvania's methane mitigation industry, showing positive effects on the economy, job market and environment.
Pennsylvania ranks among the top five states for methane mitigation activities, accounting for 8.5% of the total employee locations in the sector nationwide.
Marcy Lowe, CEO of Datu Research, said Pennsylvania's state-level methane rules have led to a 22.2% increase in methane mitigation companies over the past three years and 65% over the past decade.
"These, by the way, are firms that are both manufacturing firms and service firms that help oil and gas operators reduce the amount of methane that escapes from their operations," Lowe pointed out. "Methane, of course, is a very potent greenhouse gas, far more potent than even CO2."
Lowe emphasized the need to prevent system leaks and alter operations to avoid venting and flaring, which release significant amounts of greenhouse gas into the atmosphere.
Lowe stressed reducing methane emissions significantly improves air quality and public health, which is especially important in communities with historically poor air quality. She also noted the reduction has boosted employment opportunities in Pennsylvania, providing valuable and good-quality jobs in the methane mitigation sector.
"All the way up to computer and informational scientists that make $145,000 annual salary, to sort of the middle range," Lowe outlined. "You might have mechanical engineers making $99,000 all the way down to assemblers and fabricators making about $40,000 per year."
Lowe said they used Bureau of Labor Statistics data to understand the pay for the jobs, focusing on the median annual salary across the United States. Lowe added the number of employee locations in Pennsylvania's methane mitigation industry has grown to 50 this year, a more than 38% increase since 2021.
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The mayor of Dearborn has adopted a "health-in-all-policies" approach, a pledge to prioritize health, environmental justice and climate action in city decisions.
Abdullah Hammoud, mayor of Dearborn, announced the initiative with other city officials at an event hosted by the group Elected Officials to Protect America. With funding from the Inflation Reduction Act and Bipartisan Infrastructure Law, Dearborn is updating ordinances, zoning and permits to make the "greenest" choices easier for all.
Hammoud noted severe weather left nearly two-thirds of Dearborn homes underwater just a few years ago.
"Over the last 10 years, the City of Dearborn has had several flooding events; three," Hammoud pointed out. "We are taking all the proactive steps that we must to help prevent flooding from happening in the future."
Hammoud earned national recognition with a Mayors Climate Protection Award at the U.S. Conference of Mayors, making Dearborn one of six large cities honored.
Ashley Flintoff, executive director of the nonprofit Friends of the Rouge, a group working to clean up the Rouge River, said choices made about chemical use, stormwater runoff and natural habitat loss mainly affect communities of color.
"Causing flooding and sewage backups in residential basements," Flintoff observed. "This creates direct mental and physical health consequences for residents, particularly those in the hardest-hit neighborhoods, like the South End."
David Mustonen, communications director for Dearborn Public Schools, said after concerns about kids' exposure to diesel fumes at bus stops, the school district is replacing diesel buses, using more than $7 million in federal funding.
"With the purchase of 18 electric school buses, we look forward for these buses arriving and being delivered to the district soon, so that we can put them into service and remove 18 diesel buses," Mustonen explained.
The Inflation Reduction Act offers communities incentives and grants to cover upfront costs for other "green" projects, including solar power.
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The Biden Administration is investing $50 million from the Inflation Reduction Act in Colorado to produce more batteries to power electric vehicles.
Will Toor, executive director of the Colorado Energy Office, said the state is bullish on EVs, in part because gas-powered vehicle tailpipes are a major contributor to harmful ground-level ozone and climate pollution.
"When you look at both our climate goals and just the pollution problems that we have in Denver and the Front Range, switching to electric vehicles just has huge benefits for our air quality and for our climate," Toor asserted.
The new funding will allow Thornton-based manufacturer Solid Power to add at least 40 new jobs, paying production operators, chemists and engineers nearly $78,000 a year on average. Solid Power is also partnering with area high schools and community colleges for job training programs.
After he purchased his own EV, Toor noted he started tracking his electric bills and found significant fuel-cost savings compared with gas-powered vehicles.
"It's the equivalent of me paying about 90 cents per gallon for gasoline," Toor explained. "They are incredibly convenient, I basically don't have to go to the gas station, I just plug in the vehicle when I get home and let it charge overnight."
Colorado supported Solid Power's early growth with an Advanced Industries Accelerator grant in 2014, which supports the development of early-stage technologies. Their new sulfide-based batteries are expected to provide more power and range for drivers and are safer and less costly than conventional lithium-ion technology. Toor emphasized battery-powered vehicles can also help lower electric bills for everyone.
"People primarily charge their electric vehicles overnight, when there is a lot of excess capacity on the grid," Toor pointed out. "It helps to keep everybody's electric rates affordable over time as we get more and more EVs on the grid."
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