A new study found reclaiming abandoned mines and other degraded lands could bring hundreds of millions of dollars to the U.S. economy, fight climate change, and create thousands of jobs.

In the report, the National Wildlife Federation identifies more than four million sites, in Arizona and across the country, in need of remediation.

Jessica Arriens, program manager for climate energy policy at the National Wildlife Federation and the report's co-author, said cleaning them up should benefit the most affected communities.

"The burden of degraded lands really falls heavily on frontline and rural communities," Arriens pointed out. "And I would argue that makes it even more important that we really think thoughtfully about making sure we're engaging those communities in the implementation of degraded land reclamation."

According to the report, every dollar invested in land restoration could return up to $30 in the form of improved food production, water quality and carbon sequestration. The cleanup needs include abandoned mine and oil-and-gas well sites, brownfield and Superfund sites.

Arizona ranks among the top states for its amount of degraded lands.

Scott Garlid, executive director of the Arizona Wildlife Federation, believes the Grand Canyon State has some of the most dangerous sites anywhere.

"The 'poster child,' if you want to think of it that way, for why we need to do something is, there's something over 500 -- and I think most estimates say over 800 -- abandoned and unremediated uranium mines on the Navajo reservation," Garlid noted.

Garlid added old uranium mines are especially hazardous because most have not been identified, plugged, or covered, which can spread deadly radiation across vast parts of Arizona and tribal lands.

"It wasn't the reservations who were asking to put the mines in, in the first place, it was the government and others that got permission to do that," Garlid emphasized. "Some of it goes back to the Cold War, and some of it goes back to other times. So, I don't know why, but we haven't done anything, really, about it."

The report urged state and federal lawmakers to increase funding for reclamation, saying it will help people and wildlife thrive, address the climate crisis, and restore outdoor recreation opportunities.

Hoosiers could get their holiday trees from any of about 200 tree farms in the state, according to the Indiana Christmas Tree Growers Association. But some families choose artificial trees, and each choice comes with environmental consequences.

Delaney Barber, energy and climate manager for the Hoosier Environmental Council, said live trees help store carbon dioxide in the atmosphere, but when they are disposed of, that process creates carbon.

"If it's just going into a landfill, it's probably the worst," Barber said. "It's going to degrade down over time because it is biodegradable, but it will release more emissions as it degrades."

One report on the website earth.org claims real Christmas trees have an average carbon footprint of almost eight pounds of carbon dioxide if destroyed in a wood chipper after use. In a landfill, the carbon footprint increases to 35 pounds.

Barber suggested that Hoosiers take their live trees to designated drop-off sites in most cities for recycling, to create mulch or compost.

Artificial trees require minimal maintenance and can last for years. However, Barber explained, they're made from petroleum-based plastics and take hundreds of years to break down in a landfill. Where the tree is made presents more questions.

"Are you getting the fake Christmas tree from a U.S. manufacturer," she said, "or is it coming from overseas? And then, there's more transportation emissions for that."

About 80% of artificial Christmas trees are manufactured in China, with a lifespan of up to 30 years. Some companies are making them out of recycled materials, which helps reduce their carbon footprint.


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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.