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The plan to use hemp to solve Maine’s ‘forever chemicals’ problem hits a major snag

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The plan to use hemp to solve Maine’s ‘forever chemicals’ problem hits a major snag


LIMESTONE, Maine — An Aroostook County tribe has found that industrial hemp plants will extract so-called forever chemicals from contaminated soil on land it owns at the former Loring Air Force Base.

There’s one problem: no one can figure out what to do with the hemp.

“There hasn’t been a way to get the PFAS out of the plants without it going back into the environment,” said Mi’kmaq Nation Vice Chief Richard Silliboy.

Finding a way to take per- and polyfluoroalkyl substances, known as PFAS, out of contaminated hemp plants without unintentionally releasing them into the air is the next step in the tribe’s effort to remediate 650 acres of polluted land the U.S. government turned over to it 15 years ago.

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Using hemp plants to suck up PFAS from the ground has been touted nationally as a potential fix for the widespread pollution. But the Maine tribe’s experience has revealed a significant obstacle to making it work. Testing will soon be underway to try to find a solution to the roadblock.

PFAS refers to a group of manufactured chemicals often found in household and personal care products that have polluted soil and water at former manufacturing sites. Known to break down slowly, the long-lasting “forever chemicals” have been linked to increased risk of some cancers, issues with hormonal and immune systems, developmental delays in children, and other health issues, according to the Environmental Protection Agency.

The land the federal government gave the Mi’kmaq Nation in 2009 was so contaminated it was designated a federal Superfund site. The Mi’kmaq property used to be a key training area for Loring firefighters, who used a PFAS-laden foam.

The Air Force promised the tribe that it would clean all known toxins prior to the land transfer in 2009, but that did not happen, Silliboy said. The Mi’kmaq have largely been left on their own to clean the PFAS from their land.

Michael Daly, the EPA’s remedial project manager for Loring Air Force Base, said that a portion of the Mi’kmaq land is part of an Air Force study to determine how far foam might have spread from Loring’s airport. Daly directed other questions about clean-up efforts to the Air Force.

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Air Force spokespeople have not responded to requests for comment.

Rather than wait for federal investigators, tribal leaders found their own way to begin removing PFAS from soils on their property.

Mi’kmaq Nation Vice Chief Richard Silliboy plants hemp seeds in 2022 at the start of a research project studying whether hemp can extract PFAS from soil at property the tribes owns at the former Loring Air Force Base. Credit: Courtesy of Upland Grassroots

In 2019, Silliboy and Chelli Stanley co-founded Upland Grassroots, an organization dedicated to cleaning up the Mi’kmaq parcel. Stanley, who lives near Hallowell and has a background in community organizing, learned about hemp-based PFAS extraction and contacted Silliboy, who was immediately interested in its potential.

That year, Stanley, Silliboy and other tribal members planted and harvested several small plots of hemp plants on the Loring property. They sent the harvested hemp to the Connecticut Agricultural Experiment Station, a state-run scientific research facility.

Initial data showed that the hemp plants were extracting various forms of PFAS, including perfluorooctanesulfonic acid, or PFOS. In summer 2022 the group planted five larger plots, with four hemp varieties grown in smaller subsections within each plot.

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Of the 28 PFAS varieties identified in the soil, 10 were found in the harvested hemp plants, according to the group’s research published earlier this year.

Stanley and the Mi’kmaq Nation want to eventually expand the number and size of hemp plants to test for larger extractions of PFAS. But without a safe method to dispose of the PFAS-laden hemp, the group’s research can only happen on a smaller scale.

“We don’t want to put the hemp in a landfill and have it be somebody else’s problem,” Stanley said.

One of the group’s scientific partners, the University of Virginia, is currently developing and will soon be testing a method to take PFAS out of hemp plants, according to Bryan Berger, a chemical engineering professor.

Berger declined to reveal what method will be tested but said that if successful, he and colleagues could publish results in early 2025.

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Hemp, like other plant species containing toxic contaminants, cannot simply be burned, Berger said.

“That ends up creating airborne forms [of PFAS] that can end up in the atmosphere,” Berger said.

Hemp-based research related to PFAS extraction has been limited, as industrial hemp was only approved for agricultural use in 2018, and funding for such studies remains limited. But Berger and tribal partners recently scored a major funding source to expand their efforts and work toward long-term solutions.

Starting in 2025, the Mi’kmaq Nation, Stanley, Berger, the Connecticut Agricultural Experiment Station and Central Aroostook Soil and Water Conservation District will use a four-year, $1.6 million EPA grant to continue hemp planting at Loring and testing potential ways to extract PFAS from harvested hemp.

The Mi’kmaq Nation and Upland Grassroots planted several plots of industrial hemp on land that the tribe owns on the former Loring Air Force Base to discover how much PFAS the hemp could absorb. Credit: Courtesy of Upland Grassroots

As part of the grant, the group will also test areas of the Aroostook River, a waterway that the Central Aroostook Soil & Water Conservation District has found to contain PFAS due to irrigation runoff from nearby crop fields. They will study hemp as a potential rotation crop for keeping PFAS from seeping into potatoes and other produce.

The agricultural studies will be a continuation of work that the conservation district has already begun, Berger said. His lab will test approximately 300 to 400 samples of water from the Aroostook River as well as potatoes and other crops to know the extent of PFAS contamination.

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With colleagues from the Connecticut station, the group will study how PFAS moves through insect food chains using sample insects from Aroostook.

Berger credited the Mi’kmaq Nation and Stanley’s initial collaboration for being one of the first groups to study PFAS and hemp at the community level and bring attention to its potential.

“As a researcher, I have not seen a lot of people work on this until recently, so they’re way ahead of everybody else,” Berger said. “Our goal really is to help other tribes, farmers and rural communities who have been impacted [by PFAS].”



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Maine

Videos show dead Maine moose covered in winter ticks. How they kill.

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Videos show dead Maine moose covered in winter ticks. How they kill.


Outdoors
The BDN outdoors section brings readers into the woods, waters and wild places of Maine. It features stories on hunting, fishing, wildlife, conservation and recreation, told by people who live these experiences. This section emphasizes hands-on knowledge, field reports, issues, trends and the traditions that define life outside in Maine. Read more Outdoors stories here. 

Shed hunter Drew Maciel recently found two dead moose while searching for antlers this month. Both were covered in winter ticks and had significant hair loss.

He said he has encountered six dead moose with heavy tick loads this spring. About half were young animals, while the others were fairly large.

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Moose biologist Lee Kantar recently discussed winter ticks and Maine’s moose on the Vortex Nation podcast.

Kantar said the state has been documenting winter ticks since 2006, though wardens noted them more than 100 years ago.

Unlike dog and deer ticks, which take blood meals from multiple hosts at different life stages, winter ticks spend their entire life cycle on a single animal. They attach to moose in September as larvae, then molt into adults, breed and the females drop off in spring to lay masses of roughly 1,000 eggs on the ground.

Those eggs hatch over the summer. The larvae climb onto vegetation and wait for a host to pass by.

“The biggest problem,” Kantar said, “is once it attaches to the moose in the fall, whether it’s 50 degrees or 50 below, it makes no difference. The tick is living on the moose.”

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He said more than 90,000 ticks have been counted on a single animal and explained how heavy infestations can lead to death.

If roughly half of 50,000 ticks are females, they can each take more than 1 milliliter of blood to produce eggs. This drains so much blood from the animal that it becomes anemic.

Kantar said that unlike deer, which regularly groom using their teeth and hooves to remove ticks, moose do not.

“There are very systematic levels to how moose deal with winter ticks,” he said.

Sometimes the hair shaft breaks off from winter rubbing, leaving the white shaft — coining the term “ghost moose.” Some moose rub off all their hair, which can abrade the skin and lead to bacterial infection.

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He believes rubbing the coat is a learned behavioral response. Many moose entering their first winter do not have missing hair. By their second year, they begin grooming and rubbing and continue to do so for the rest of their lives.

Kantar said that based on observations from radio-collared moose, animals captured in January can begin losing about a pound of body weight per day until little remains. By late winter, they may lose about 30% of their body weight.

“It’s a dead moose walking,” he said. “They basically go septic at some point.”

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Small animals are the most vulnerable, he said. An 8-month-old moose calf captured in January may weigh about 400 pounds.

“It needs to be that much weight,” he said. “Even without ticks, a calf entering winter has no fat because it’s still growing its skeletal mass and is in a deficit.”

An 800-pound cow has the benefit of entering winter with fat reserves.

Even so, adult moose still lose condition. If a cow goes into winter pregnant, the fetus requires nutrition while tens of thousands of ticks are taking blood.

A moose’s winter diet lacks the protein needed to replace lost blood.

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Kantar and colleagues in New Hampshire have found that cows often survive heavy tick loads but give birth to calves that are underweight, do not survive or struggle because the cow may not produce enough milk.

Using data from roughly 1,000 collared moose over 13 years, Kantar said adult mortality is relatively low compared to calves. Fall tick counts from index samples collected at harvest can help predict spring outcomes.

In some years, more than 70% of collared calves have died due to winter ticks.

The worst year saw 87% mortality. The best was 8%.

Kantar said there appears to be a strong link between moose density and tick abundance. More moose on the landscape means more ticks.

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That link led to a five-year adaptive hunt in wildlife management district 4 aimed at reducing cow numbers and studying impacts on tick loads and reproduction. Results from that study are expected this summer.

While some have proposed treatments such as acaricides to manage winter ticks, Kantar said the scale makes them ineffective and expensive. Future management may instead focus on forest practices that help spread moose across the landscape.

Next steps include conducting fine-scale work with adult moose using high fixed-rate GPS collars. Kantar hopes to better understand where individual animals are each week over their lifetimes, and how forest management may play a role.



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These are the Best Outdoor Dining Joints in Maine, According to Locals

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These are the Best Outdoor Dining Joints in Maine, According to Locals


It’s finally that time of year. warmer weather is here, and outdoor dining is right around the corner.

In Maine, that’s the real sign that spring has arrived. Restaurants, cafés, and bars start setting up their patios and sidewalk tables, and suddenly everything feels right in the world. After a long, tough winter, it’s a simple but welcome reminder that we made it through.

It also means Maine is gearing up for another year of hordes of tourists rolling into the state to enjoy all it has to offer. And local fare is certainly high on that list—because it’s, well, delicious.

How Great is Maine as a Foodie State?

We spend massive amounts of time discussing and dissecting every little aspect of the Maine restaurant scene. Whether it’s Portland, the surrounding area, Bar Harbor, Central Maine, the Midcoast, the Western Foothills, or the Southern Coast, this state is an absolute gold mine.

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Oxbow Beer Garden via Facbeook

Oxbow Beer Garden via Facbeook

With warmer weather and longer days rolling in, I thought it’d be fun to take a look at some of the state’s best restaurants for outdoor seating—the spots that not only serve great food but also offer beautiful views of Maine’s charming towns and stunning landscapes.

Outdoor dining has absolutely blown up in Maine since 2020, with countless restaurants making use of any available outside space. It’s been a huge hit with both locals and tourists.

We put out the call for the joints Mainers say have the best outdoor dining—the restaurants that help shape a community and keep our stomachs full.

Jones Landing via Facebook

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Jones Landing via Facebook

Now, thanks to our stations’ social media, we can finally put some names to those establishments.

What are the Best Maine Restaurants for Outdoor Dining?

Below is a list of many of the restaurants that were suggested to us. They vary in size, concept, and location. Some have opened recently, while others have been community staples for years. But they’re all true Maine originals.

READ MORE: Maine’s Chase’s Daily Named One of America’s Best Vegetarian Restaurants

You can check out the full list below. Hope you’re hungry—I know I am.

35 Maine Restaurants with the Best Outdoor Dining

Thanks to our great listeners we were able to compile a list of many of Maine’s restaurants with the best outdoor dining.

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These great spots can be found across the state and waiting for you to give them a try.

How many have you been to? How many would you like to try for the first time?

Gallery Credit: Chris Sedenka

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Rock reunions are creating some of the biggest headlines for 2026 – but there are lots of other huge shows on the way.

Gallery Credit: Nick DeRiso

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Maine Republican candidates are upset about their own party’s online poll

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Maine Republican candidates are upset about their own party’s online poll


Politics
Our political journalists are based in the Maine State House and have deep source networks across the partisan spectrum in communities all over the state. Their coverage aims to cut through major debates and probe how officials make decisions. Read more Politics coverage here.

A Maine Republican Party online survey on the gubernatorial primary has sparked frustration and exposed divisions among the crowded field just a week before the party aims to project unity at its convention in Augusta.

Multiple campaigns told the Bangor Daily News they were not aware of the poll in advance or had not received the survey in an email sent out widely by the party last week. The campaigns said the survey’s timing and the fact that not every candidate had the chance to work the poll and vote for themselves sent the wrong message.

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Former fitness executive Ben Midgley won the straw poll, which the party noted was not scientific. His campaign cited the nearly 32% support as a sign of rising momentum in a race that’s been led so far by lobbyist and former federal official Bobby Charles. Charles came in second at almost 30%, and entrepreneur Jonathan Bush came in third at 13%.

Charles has led previous polls without spending nearly as much on advertising as Bush or groups backing lobbyist and former Maine Senate Majority Leader Garrett Mason. Midgley was among a large group of candidates stuck in the single digits in a survey released in March by Pan Atlantic Research.

Staffers at two campaigns said there was briefly talk of boycotting the convention after the poll. Delegates are poised to gather over Friday and Saturday at Augusta Civic Center, where the party says another straw poll is planned.

Mason said he did not see the survey in his email but acknowledged it may have been received by his team without it getting up the chain.

“It probably wasn’t the wisest thing to do for party unity,” Mason said. “It’s not the best look.”

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Vincent Harris, a Charles spokesperson, said the campaign “did not push or promote this straw poll to a single person.” He said the campaign was unaware of the survey until Midgley’s release.

“As Republicans, we believe voter integrity is important and yet there was no clarity here,” he added.

Entrepreneur Owen McCarthy’s campaign was also not aware of the online stroll poll until after results were released. A spokesman for the campaign called it “unfortunate that with the convention right around the corner, the whole process has been tainted by the perception that party insiders are trying to foist their preferred candidate onto grassroots primary voters.”

Jason Savage, executive director of the Maine GOP, said the party believed all the candidates had received the poll, but “we take everybody at their word that says they didn’t receive it.”

He and a spokesperson for the Bush campaign also separately noted that the straw poll was discussed during a pre-convention Zoom meeting, and he said it went to the party’s entire email list. The poll went to at least two BDN email addresses.

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Savage emphasized that the convention poll would be “one person, one vote” per delegate.

“Everything in a few days is going to be about the convention,” he said. “Everybody is invited to compete and do their best and see how they can do.”



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