Scientists at Purdue University have been experimenting to create adhesives designed to be easier on the environment.

So many products from cellphones and shoes, to furniture and cars all contain adhesives. And because of their petroleum base, there are downsides, as the adhesives may have a strong odor and not be biodegradable when they end up in landfills.

Jonathan Wilker, professor of chemistry at Purdue University, along with his team of chemists found a safer alternative by studying oysters and mussels.

"We take the information we learned from the animals and we create 'biomimetic' adhesives, we call them," Wilker explained. "Surface adhesives that are modeled after biological systems."

Wilker noted like adhesives, sea animals stick to coastal rocks to build their communities. His lab team wanted to make a product just as strong, but also affordable, nontoxic, and sustainably sourced. Wilker's team also had to consider the availability or scale of the materials they started with at the onset of testing.

Research indicates most wood adhesives using petroleum-derived products contain formaldehyde resin. Formaldehyde is already strongly regulated, and more restrictions could be coming in the European market.

Instead, Wilker's formula uses soy oil, mixed with malic acid, a compound which gives apples their tart flavor. He pointed out they have tested it successfully on wood, plastics and metals. Wilker added he is happy to see the interest generated since the findings were published in the journal "Nature," and would like to see more.

"We're looking for partners to help commercialize the technology and actually have an environmental impact," Wilker stressed. "(The) ideal timeline is now; there's no reason to wait. We think we've got it to the point that it's ready to go out."

Future plans for the adhesive are to do further research for possible use in the medical field, as well as for industrial materials and packaging.

Bloomington and Indianapolis are getting some international recognition for the work they're doing to help the environment. The two have been named "A List Cities" by the International Council for Local Environmental Initiatives.

Only 119 cities and counties worldwide got A List designation this year, for "bold leadership on environmental action" and transparency about their plans. The cities are on what's known as the Carbon Disclosure Project Track, making progress to curb carbon emissions.

Director of the Office of Sustainability for the City of Indianapolis, Morgan Mickelson, said one reason for the Indianapolis ranking is its efforts in tree planting.

"Trees are really important to help us lower surface temperature in our neighborhoods, also to help purify air," she explained. "We have a large effort with Keep Indianapolis Beautiful to plant trees, and we work really intentionally with KIB to ensure that we're planting trees in areas that historically have not seen as much investment in terms of tree planting."

Nonprofit Keep Indianapolis Beautiful runs programs that encourage teen and adult involvement, and partners with the city on multiple conservation projects.

Bloomington's Climate Action Plan features many carbon-cutting objectives, including boosting food markets to help grow that city's local food economy and reduce waste.

The Office of Sustainability also administers Thrive Indianapolis, the city's first sustainability and resiliency action plan.

Mickelson said since 2018, more than 31,000 trees have been planted in public spaces -- and that's just a start.

"I also want to caution everyone that the work is not done," she warned. "We're in the climate crisis. I would just encourage everyone to take the time to reflect on all the hard work that is being done, but to also not forget that we have a lot more work ahead."

This is the sixth time Indianapolis has received an 'A' rating.



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A Virginia group is working out ways to reforest former mines across Appalachia.

The state has several hundred thousand acres of mine land, which was being handled under the Virginia Department of Energy's Abandoned Mine Land Economic Revitalization Program. But other groups feel reforesting mine lands can play a role in reducing global carbon levels.

Diana Dombrowski, carbon research fellow at Appalachian Voices, said this is the kind of project the carbon-offset market can invest in.

"They're interested in projects that not only are maybe more local, to where they're based, but also have an environmental justice perspective," Dombrowski explained. "When it comes to the work of reforesting mine land, we're aware of a need in central Appalachia."

The process begins with reclaiming the mine land, which could cost from $7.5 billion to almost $10 billion. But the carbon offset market made $277 billion last year, so it sounds possible. There also are other options available. The Bipartisan Infrastructure Law provides almost $113 billion, appropriated for Virginia's Abandoned Mine Reclamation Fund.

Reforesting former mining areas can help Virginia achieve its climate goals. The projects can add to resilience against storms for communities, and help keep air and soil healthy.

Dombrowski noted other challenges could come up, such as how to identify the best sites for reforesting projects.

"Designing a project that can plan for the most carbon sequestration," Dombrowski suggested. "Where you pick the best land versus a project where you are maybe running over an average, that maybe people will see in the public at large."

Since the work is in the earliest phases, other challenges could arise. Dombrowski pointed out one priority is to focus on environmental justice. She added if any projects turn a profit, the funds will be reinvested into the workforce or materials to keep the work going.

Wildlife advocates are pushing back on a bill in Congress which would remove federal wilderness protections from some Montana land.

There are currently 44 Wilderness Study Areas, making up a million acres of Montana's wildest prairies, river breaks, deep forests and mountain peaks in all corners of the state. Experts agreed they provide unparalleled wildlife habitat, clean air and water.

But Senate Bill 2216, sponsored by Sen. Steve Daines, R-Mont., would remove 100,000 acres from the study areas, including Hoodoo Mountain, Wales Creek and the Middle Fork of the Judith River.

Gayle Joslin, a retired wildlife biologist for the state of Montana, called it a move in the wrong direction.

"These areas would be released to mining, to timber harvest, to recreational development," Joslin pointed out.

A 2022 voter survey found only 6% of Montanans support eliminating protections from the study areas. Daines and other supporters of what's been dubbed the "Montana Sportsmen Conservation Act" countered the study areas are "restrictive" and could be better managed to mitigate wildfire risk and increase public access.

The wilderness areas are open to recreational users but not to motorized vehicles, which the bill would change. It is a slimmed-down version of a measure Daines introduced in 2017, which would have removed protections from 500,000 acres but was defeated.

Joslin argued Montana residents are unanimous in their support for public lands and for many reasons, not the least of which is they are disappearing.

"They are simply not making wild country anymore," Joslin stressed. "Every acre we lose is a loss for wildlife and for, really, wildland scenic and spiritual opportunities for people."

Polls also show close to three-quarters of Montanans want to maintain or increase environmental protections and see development as a 'serious threat.' Critics of the bill said Daines sidestepped input from the public and from federal environmental officials. The measure awaits action in the full Senate.


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