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Out There: Mosquito math

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Out There: Mosquito math


This is the web version of our email newsletter, Out There! Sign up to get our bi-weekly dose of all things environment — from creatures you might encounter on your next stroll, to a critical look at the state’s energy transition, plus ways to take part in community science and a roundup of local outdoor events.

🌔 It’s Saturday, Sept 14. Here’s what’s on deck:

  • Spectacular foliage predicted
  • A $9.6 billion climate plan
  • Studying astronaut pee

But first,

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Vermont Public’s biweekly dose of all things environment.

A risky time to get bug bites

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Photo illustration by Lexi Krupp (Vermont Public) / Map from the Vermont Department of Health

The state has said several Vermont towns along the Champlain Valley are at high risk of exposure to EEE. Risk levels are determined from confirmed human cases and where mosquitos have tested positive for the virus for two consecutive weeks or at multiple sites in a community. 

A virus called Eastern Equine Encephalitis, or EEE, has shown up in mosquitoes in over a dozen towns in western Vermont this summer, from the Champlain Islands to the top of Rutland County. Several species of mosquitoes can carry the virus, which originally comes from birds.

When an infected mosquito bites a person they usually don’t get sick. But in rare cases, a bite can land someone in the hospital, like it did for a Chittenden County man this July, or lead to death, like for a New Hampshire man last month. So public health officials are advising Vermonters to take precautions against mosquito bites: cover up, wear bug spray (or use DEET wipes), remove standing water from your property and, in certain areas, avoid being outdoors at dawn and dusk, when the mosquitoes that carry the virus are most active.

📊 The numbers: A little over 2% of the vials of mosquitoes the state has collected and tested since June have come back positive for EEE. That’s the highest rate since state researchers started testing for the virus in 2011, after a bunch of emus got sick on a farm in Rutland County. In some areas, the percentage of mosquitoes testing positive is much higher, but rates have come down in recent weeks.

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😷 Risk from a bug bite: If you do get bitten by a mosquito infected with EEE, most people have no symptoms or develop a mild illness. About 5% develop brain inflammation – that comes out to an average of 11 cases in the U.S. each year, which can be fatal. The scary thing about this virus is there’s no treatment. There’s a vaccine for horses, but not for people.

🗺️ Location, location, location: The state doesn’t test mosquitoes in every town – they have just over 100 testing sites, spread out among 88 towns. To show areas at the highest risk, the health department created a map with a 5-mile radius around towns where mosquitoes have tested positive or where there’s been a human case. They use a relatively small radius because mosquitoes don’t travel very far over their lifetime – typically less than a mile from where they hatch.

🍂 Cooler weather means fewer bug bites: Mosquitoes are less active as temperatures cool and start to become inactive below 50 degrees. There are also fewer of the bugs when it’s drier. This year that has meant less mosquitoes in the southeastern part of the state.

🚫 The state is not to spraying pesticides: The Department of Health says the risk to the public is not great enough to warrant applying pesticides to kill adult mosquitoes, based on the species testing positive and the weather.

In other news

🌈🍁 ‘The best in a decade’: That’s the prediction for the upcoming foliage season from a naturalist at NHPR. He says forests this summer didn’t have many insect outbreaks, it wasn’t too wet or dry, and many leaves were still green over Labor Day – all indicators of great fall colors. In other seasonal news: The first snow fell at Jay Peak and Mount Washington this week.

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💰 Governor blasts nearly $10 billion price tag of climate legislation: The figure is an estimate of how much it will cost Vermonters to meet statutory requirements to reduce carbon emissions from heating buildings over the next 25 years, according to a recent analysis. Scott compared lawmakers’ tentative plan to control thermal sector emissions to failed efforts to pass single payer health care reform in the state. Advocates point out the same analysis predicted Vermonters would see nearly $12 billion in societal benefits.

🚱🐄 EPA says Vermont is violating the Clean Water Act: At issue is how the state regulates water quality complaints on Vermont farms with livestock living in close quarters, like many dairy farms. The EPA says the state isn’t doing its job to control manure and wastewater spills on these farms. And if the state doesn’t get in line, the federal government will take away Vermont’s authority to regulate local water quality broadly – something state leaders have called “the nuclear option.”

🚀 Collecting astronaut pee: Researchers at Dartmouth College are getting urine samples from the crew currently aboard the SpaceX rocket circling Earth as a way to ultimately track  bone loss and prevent kidney stones in space. It’s a common health concern for astronauts, whose bones shed calcium in zero-gravity conditions.

In your backyard

A drawing of a gray frog sitting on a rock in teal/green water, looking at some orange fish-like tadpoles.

Laura Nakasaka

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Vermont Public

This frog changes color to match its environment. The bright coloring on the backs of its legs are only visible when it jumps and is thought to confuse predators.

Get out there

🏞️🗑️ Cleaning day: Several groups are hosting river clean ups this weekend in Vermont and throughout the region. In Derby, you can join a paddle along the Clyde River at 10 a.m. Saturday, Sept. 14. Bring a canoe or kayak if you have one, but it’s not necessary. In Barre City, organizers say to come ready to wade through water in the Stevens Branch and Jail Branch rivers to pick up plastic bags, old tires and other trash. The event kicks off at 9 a.m. with a bagel breakfast.

🥾 Pride Hike in Jeffersonville: Join staff of Vermont Audubon and the Vermont Land Trust on a two-mile walk featuring a covered bridge, the top of a waterfall, and an optional swim in the river Saturday, Sept. 14 at 1 p.m. These monthly hikes have been taking place since 2018 as a gathering for queer hikers and allies.

🍄💃 Celebrate mushrooms: First, head to the Birds of Vermont Museum in Huntington for a walk with a mycologist to explore the woods and learn about mushrooms Saturday Sept. 14. Then, go to a dance performance set on a golf course in Hanover, NH that follows the life cycle of fungi, running Tuesday, Sept 17 through Thursday, Sept 19. Tickets are $30 and up.

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Vermont Public’s biweekly dose of all things environment.

Credits: This week’s edition was put together by Lexi Krupp with lots of help from the Vermont Public team, including graphics by Laura Nakasaka and digital support from Sophie Stephens. Editing by Brittany Patterson. 





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All gifts matched to keep Vermonters warm and informed – VTDigger

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All gifts matched to keep Vermonters warm and informed – VTDigger


Dear Readers,

There are just days left in our Warmth Support Program partnership, and right now, your gift can do double duty for Vermont.

Until midnight on Dec. 25, every donation is matched dollar for dollar and helps provide two days of emergency heat to a Vermont household in need through the Warmth Support Program of Vermont’s Community Action Agencies.

Local news helps Vermonters understand what’s changing on the local, state and federal level — and how to respond. VTDigger delivers daily and investigative news that you can rely on year round. This work takes resources, and it’s powered directly by our readers.

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At the same time, thousands of households in Vermont are struggling to afford basic heat right now. The community-funded Warmth Support Program of Vermont’s Community Action Agencies fills critical gaps when other fuel assistance isn’t available. Funds go directly to fuel suppliers to prevent shutoffs and keep families from running out of heat.

If you’re able, please make a gift that’s meaningful to you before midnight on Dec. 25 and it will be matched! Plus it will warm homes.

Thank you for helping connect Vermonters to the information and resources we need to look out for one another this season.

Sincerely,

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Libbie Sparadeo

Director of Membership and Engagement, VTDigger


P.S. If you or someone you know needs heat assistance, you can learn more about the Warmth Support Program and find contact information here.


The donation to the Warmth Support Program of Vermont’s Community Action Agencies is generously underwritten by our partnership sponsor, Vermont Gas, so that 100% of your gift to VTDiggers supports our newsroom.





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Nine Vermont dams were removed in 2025. There are many more to go.  – VTDigger

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Nine Vermont dams were removed in 2025. There are many more to go.  – VTDigger


The landscape before and soon after the removal of Newport’s Sleeper Pond Dam in Oct. 2025. Photo courtesy of the Missisquoi River Basin Association

There are at least 140 dams in the Winooski River watershed, according to Michele Braun, executive director of the Friends of the Winooski River. Three of those dams help with flood control. Fifteen provide hydropower. A “handful” contribute to local recreation. 

But the rest? They “aren’t doing anything but causing trouble,” Braun said. 

“The great majority of those dams serve no purpose and are a public safety hazard, as well as bad for the river health and fish,” she said. 

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Braun helped lead an effort to remove two dams in Barre City and Barre Town this year, part of a decades-long effort to get rid of derelict or harmful dams along Vermont’s waterways. According to the Vermont Natural Resources Council, local and regional organizations removed nine dams this year, the most in a single year, reconnecting 125 miles of river. 

More than 80 dams have been removed since the 1980s, some of which were more than a century old, said Karina Dailey, science and restoration director for the council, who also chairs the Vermont Dam Task Force. 

There are plenty more to go. Vermont’s dam safety program and local watershed partners have identified 47 dams that would be good candidates for removal, along with 27 active projects at different stages of preparation for removal and 12 projects that have stalled, according to a task force report. 

Dam removals have gained urgency in recent years as Vermont communities have been battered by repeat floods. An increasing body of research shows that some dams can worsen flooding. Five dams failed during flooding in 2023, sustaining heavy damage, according to state investigators. 

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Removing dams can also benefit the local ecosystem, improve water quality and improve recreational opportunities for swimmers and boaters, according to the task force’s website. 

But dam removals can be a long and arduous process. The first challenge, Dailey said, is getting the dam owners on board. Many of the dams pegged for potential removal are privately owned, and the landowners have no obligation to participate in the process. 

Braun said that one of the dams her organization removed this year was owned by Trow and Holden Co. Initially, the owners expressed an emotional attachment to the dam, which was built in the 1800s and powered a factory that manufactured tools for the granite industry. Braun won them over by showing how getting rid of the dam would lower the flood elevation behind their building and make the river more predictable in the future. 

Dailey said the “silver lining” of the 2023 flood is that landowners are now “connecting the dots between the flood hazard in their yard of owning this dam, and not wanting to be liable for impacting downstream infrastructure or communities.” 

A historic photo of the Trow & Holden Brooklyn Street Dam. Photo courtesy of Friends of the Winooski River

She gave the example of a dam failure in Williamstown that caused “quite a lot of damage.”

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 “The landowner had to do an emergency breach to stabilize the project because we couldn’t remove it fast enough to get all the funding and the permits,” she said. The task force is hoping to get the dam removed sometime next summer. 

Dam removals tend to be more complex than other infrastructure projects, requiring specialized construction companies and a variety of permits, Braun said. The state also sets a hard stop: All river projects have to be finished by October. 

Although removal projects can benefit the local flora and fauna, they can also cause short-term upheaval to animal habitats and vegetation. Lindsey Wight, executive director of the Missisquoi River Basin Association, said that the crew removing the Sleeper Pond Dam in Newport had to carefully relocate snapping turtles.

An excavator works to remove the Trow & Holden Dam in Sept. 2025. Photo courtesy of Friends of the Winooski River

“We got to dive into the muck and get a couple of turtles and bring them up Mud Creek a little bit farther to just sort of keep them out of the way,” she said. 

Greg Russ, restoration director of the White River Partnership, said the organization had to plan their use of heavy equipment around the local bat roosting season when they removed the Farnham Bros. dam in Tunbridge. The crew also had an archeologist on site throughout the project documenting any details uncovered about the roughly 100-year-old dam for future researchers. 

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Dailey said she was glad to see so many projects move forward this year despite the chaotic situation at the federal level. The federal government froze funding specifically for dam removal that had already been committed in February, and for a while the task force thought those projects might not happen at all. 

Although the funding has since been restored, lining up grants and loans for new projects is an ongoing challenge, Dailey said. At the Army Corps of Engineers, one of the most important Vermont staffers took a federal buyout and hasn’t been replaced, she said. Cuts to the Federal Emergency Management Agency have left it short-staffed, slowing down approval for a dam removal in Northfield. 

“The money supposedly is still there and hasn’t gone away, and the project will still move forward,” Dailey said. “But there’s just not enough staff to review it to keep it moving along.” 

She said she expects the Trump administration’s actions will affect funding for years down the line, impacting the possibility of future projects. 

In the meantime, the waterways that had dams removed this year will slowly change as they adapt to the new shape of the landscape. 

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“Really the first five years is where the river is sort of just creating its natural channel, and it meanders a lot,” Dailey said. 

“You watch a rain event, and the river just starts moving and meandering more and more,” she said. “And that’s really exciting, because that’s what rivers do, how rivers function.”

Braun noted one immediate benefit of the Trow & Holden dam removal. At the kickoff meeting for the removal, her team spotted a dozen trout swimming right up behind the dam. 

“We were all so excited to see them, because soon they would be able to be connected to the rest of the river system,” she said. 





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Vermont congressional delegation nominates 23 students for military academies

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Vermont congressional delegation nominates 23 students for military academies


MONTPELIER, Vt. (WCAX) – Vermont’s congressional delegation nominated 23 students for military academy appointments Saturday, with the applicants speaking to lawmakers about their goals to serve the country.

Senators Peter Welch and Bernie Sanders, along with Representative Becca Balint, met with the nominees at the Statehouse to discuss their motivations for military service.

“You’ve made a decision that life is better when you’re helping others,” Welch said.

Balint told the students that regardless of whether they are accepted, being nominated is significant.

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“Whatever happens whether you’re accepted or not being here, today is a really big deal,” Balint said.

Many nominees said they want to be part of something bigger than themselves and protect the ideals the country was built on, according to reporter observations from inside the event.

“That was a very interesting message that came from the young people,” Sanders said.

Welch said the students were motivated by teamwork, service and giving back.

One nominee said the reason that motivated them to serve is wanting to be a doctor.

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Francis Robinson, a Merchant Marine applicant, said he wants to be the captain of a ship one day.

“All the books I’ve read since I was a kid have all been sea stories and I just want to be a part of that,” Robinson said.

Grady Gallagher, an Air Force applicant, said he wants to protect the people he loves and replicate the feeling of camaraderie he felt through football.

“I just want to be exceptional,” Gallagher said.

Many families attended the ceremony to support the nominees. Jamie and Sarah Gallagher, Grady’s parents, said they felt proud hearing their son’s answers.

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“Seeing that he’s ready to take on the world and really be a leader of this next generation is really awesome,” Jamie Gallagher said.

Beck Welch, an Air Force applicant, called it a special moment.

“This is a very special moment for me and all of us and I think we’ve all worked very hard to be here,” Welch said.

Robinson said the experience was unique and one he will remember forever.

Sanders wished the nominees the best of luck and said Vermont has a long history of dedicated military service.

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“I know they’re going to continue that tradition,” Sanders said.



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