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Q&A: What’s in the Water of Alaska’s Rusting Rivers, and What’s Climate Change Got to Do With it? – Inside Climate News

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Q&A: What’s in the Water of Alaska’s Rusting Rivers, and What’s Climate Change Got to Do With it? – Inside Climate News


From our collaborating partner “Living on Earth,” public radio’s environmental news magazine, an interview by managing producer Jenni Doering with Jon O’Donnell, ecologist for the Arctic Inventory and Monitoring Network at the National Park Service.

The rapid climate change happening to our planet is often invisible. 

Think of rising carbon dioxide levels in the atmosphere, or heat waves across the globe.

But in the far north of Alaska some changes are impossible not to see. 

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That’s because dozens of crystal-clear streams in the Brooks Range are turning a cloudy orange.

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A 2024 paper published in the Nature journal Communications: Earth and Environment connects the change to rapidly thawing permafrost that appears to be releasing metals like iron into these streams. 

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Lead author Jon O’Donnell is an ecologist for the Arctic Inventory and Monitoring Network at the National Park Service. This interview has been edited for length and clarity.

JENNI DOERING: So when did you first notice that the streams in Alaska’s Brooks Range looked rusty? And what was your reaction?

Dr. Jon O’Donnell is an ecologist for the NPS’ Arctic Inventory and Monitoring Network and the lead author of the paper. Credit: Mike Records/USGS
Dr. Jon O’Donnell is an ecologist for the NPS’ Arctic Inventory and Monitoring Network and the lead author of the paper. Credit: Mike Records/USGS

JON O’DONNELL: So we were monitoring a site in Kobach Valley National Park, on the Akillik River. And we had been collecting samples there, water samples and biological samples, like fish and bugs. That was in 2017. And when we went back in August of 2018, for a site visit, we noticed that the stream had turned orange. And this was surprising to us. And so you know, we were accessing this site in a small helicopter. And you know, my initial thoughts were, this is kind of an important thing to document. But I kind of thought it was maybe just anomalous, or a case study, where you know, this might just be a one-off thing, but it’d be a good story. So we should do a good job, collect all the samples that we need to collect. So we grabbed water samples, and we collected fish and bugs. And then, when we went back out in 2019, we were flying around the region, and we noticed that there were more streams than we had previously noticed, had turned orange. And that was kind of when I started to think that this might be a bigger issue than this anomalous one stream in Kobach valley, that it may be a bigger issue. And at that point, we started trying to compile observations from across the Brooks Range.

DOERING: So you mentioned that you did some water sampling. And you were finding these minerals in the water samples. What kinds of minerals have you been collecting? 

O’DONNELL: Yeah, so we collect water samples from these orange streams, and then nearby clear water streams. And we measure the same suite of chemicals on all of them. So the orange in the stream, that is a reflection of iron. And so those are iron particulates, it makes the stream very turbid or filled with particles. And then those particles often get deposited on the stream bed, and so they blanket the rocks and the sediments in the bottom of the stream. But in addition to the iron, we see that these orange streams are more acidic, so they have a lower pH than, than clear water streams. And there’s a whole range of trace metals that are potentially toxic, both in terms of drinking water and for life that are living in these streams. And so examples of those trace metals that we’ve seen are like zinc and copper and arsenic and cadmium and a range of others that are elevated in concentration in the orange streams.

DOERING: So what do you think is going on here? What do we know about what might be causing this change in the streams and rivers?

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O’DONNELL: All of our observations point towards climate and permafrost thaw as a driver of this change. The reasons for that are one, the timing. So we’ve documented over 70 streams and rivers that have changed in the very recent past here, so in the last 10, 10- 5 years. And this is a period of time where the climate has warmed dramatically in the Arctic. There’s also evidence that in these specific watersheds, the climate has warmed past the point where permafrost can stay cold and stay frozen. And so we know that permafrost is thawing in this region. And when permafrost thaws, that changes the hydrology of these watersheds. So you can imagine these mineral deposits being contained in what is essentially a freezer. And as the permafrost thaws, that’s kind of like shifting them to a refrigerator. And so now things can melt, ice can melt, water can flow. And so what we’re seeing is that we think groundwater is flowing through these soils and mineral deposits, where permafrost has thawed. And that is creating this chemical reaction that’s releasing all these metals and acid into the streams. 

The researchers hypothesize that melting permafrost allows groundwater to flow through mineral deposits, causing chemical weathering. Credit: Josh Koch/USGSThe researchers hypothesize that melting permafrost allows groundwater to flow through mineral deposits, causing chemical weathering. Credit: Josh Koch/USGS
The researchers hypothesize that melting permafrost allows groundwater to flow through mineral deposits, causing chemical weathering. Credit: Josh Koch/USGS

DOERING: Why are these metals and chemicals concerning? What effects could they have on wildlife and people in the area?

O’DONNELL: Right now we’re working to try to determine if these concentrations of metals have exceeded EPA, Environmental Protection Agency, thresholds for both aquatic life and for drinking water. And so we don’t have a definitive answer on that yet. At the concentrations, we know that this would affect taste of drinking water, so it might be more metallic. But one of our concerns is that these metals will be accumulated from the base of the foodweb through like algae and macroinvertebrates or bugs that live in the bed of the stream, up into fish, you know, similar to what people have shown with like mercury that can bio accumulate and magnify within a food web, and then it gets into fish and then into people if they eat the fish. So we’re concerned because these metals can be toxic both to the aquatic life, but into the people that might rely on the fish as part of their diet. And the stream where we were monitoring, and it changed from clear water to orange, when we first went there, and when it was a clear water stream, it had a really healthy fish population. So lots of small Dolly Varden. And these little resident fish, called slimy sculpin, there was just a lot of them. When we went back after the stream changed color, and it had turned orange, there were no fish. All the fish were gone. We did the exact same protocol for sampling, and the fish had disappeared. And the macroinvertebrate insects, the bugs that reside in the bed of the stream, their numbers declined dramatically with this change. So our thought probably is that the fish migrated out of this river to a better habitat. But there’s also a chance that they were impacted by this bio accumulation of metals up through the food web. And so this was just one instance, where we’ve measured this, we’re continuing our work now to try to figure out really, how are these fish being affected, but our initial thought is that the fish just left, the stream turned orange, and it was not a good habitat for them anymore.

DOERING: It’s amazing how rapidly these changes seem to have happened. I mean, it’s, you know, one year to the next, you notice these really rapid, significant changes, which is rare often when we’re studying what’s happening with climate change. How extensive is this issue in Alaska and beyond?

O’DONNELL: These observations that we have sort of span from the lower Noatak River Basin, in the West, all the way to the Arctic National Wildlife Refuge in the east. So it’s a you know, over 1000 kilometers. We’ve also been getting reports of observations from other areas in Alaska. So the North Slope, north of the Brooks Range, the Yukon River Basin to the south. So these are all watersheds and regions that are in permafrost zones. And so it’s possible that permafrost thaw is driving these observations elsewhere. There is some evidence in the literature for this kind of thing to be happening in non-permafrost regions, such as in the Alps, and in the Andes, in South America, where you have mountain glaciers, and when these glaciers melt, you expose minerals and rocks. And so similar process, except in these other regions, we’re talking about glaciers melting, as opposed to permafrost thawing.

DOERING: You know, this era that we’re living in is often called the Anthropocene, the age that’s shaped by humans. And it sounds like in this case, we’re changing geological processes. I mean, climate change is changing so many different geological processes, but it’s even changing the way that minerals are coming out of the soil.

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O’DONNELL: Yeah, and I would say that the Arctic, because it’s so remote, and because of some of the unique features of the Arctic, it’s changing at a faster pace than other regions, like temperate and tropical regions and the globe as a whole. You know, I think the latest evidence shows that the Arctic is warming about four times faster than the Earth as a whole. And because of that, and because of the permafrost, and because of how much carbon and other things are stored in the soils up here, there’s potential for really rapid change, and really dramatic alteration of ecosystems up here that you don’t necessarily see in other parts of the planet. And so yes, the fact that there are these anthropogenic warming effects that are driving climate change in the Arctic and permafrost thaw, and ultimately, this release of mineral compounds, trace metals into streams, that’s a really unique set of factors that we wouldn’t necessarily have foreseen when thinking about climate change in the Arctic.

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DOERING: Jon, what is it like to be studying this and seeing these changes as a scientist?

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O’DONNELL: Yeah, so I’ve been working in Alaska now for over 20 years. And I view my job as an ecologist, is basically to document the changes that are occurring. And I’ve worked on a number of different types of studies related to wildfire, permafrost thaw and carbon cycling, things like that in the Arctic. This is by far the most surprising set of observations that I’ve been a part of in my time up here. And I think that it is shocking in terms of how fast it’s happening and the spatial scale at which it’s happening. As somebody who has documented these changes for over 20 years, I’ve become somewhat used to or maybe desensitized from some of the more dramatic things going on. When I sent this paper to my parents who live on the east coast in Philadelphia, they responded by saying that they were depressed and saddened by what they were seeing. And because I’m so used to just functioning as a scientist, I maybe separate my emotional responses from some of these dramatic things that are happening up here. But talking to the public and talking to my family and friends, I’ve kind of been forced to realize that there’s this emotional response that people have to wilderness and to nature, and to places like national parks that people love to go and visit, and when they see them undergoing this sort of change, it’s upsetting. 



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Alaska Senate committee advances draft capital budget, boosting funds for school maintenance

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Alaska Senate committee advances draft capital budget, boosting funds for school maintenance


The Alaska Senate Finance committee advanced a draft capital budget on Tuesday that would put nearly $250 million toward state facilities and maintenance projects next year.

The draft budget adds $88 million to Gov. Mike Dunleavy’s proposed capital budget of $159 million, with the largest additions going toward K-12 schools and university facilities maintenance.

That was a focused effort by the finance committee, said co-chair Sen. Bert Stedman, R-Sitka, who called funding for education facilities maintenance a “heavy concentration” on Wednesday.

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Earlier this year, students and school officials testified to lawmakers that decades of deferred maintenance has reached crisis levels — with many rural school districts in particular grappling with deteriorating facilities, failing water and sewer systems — which they say is degrading student and staff morale. Lawmakers have expressed support and increased funding in recent years, but point to Gov. Mike Dunleavy’s history of vetoes as a roadblock for funding education.

The Senate draft includes $57.8 million in additional funding toward K-12 school maintenance through the Alaska Department of Education and Early Development and $17 million toward the University of Alaska. It also includes $5.7 million for the Alaska Court System’s facilities and $8 million for community infrastructure and workforce development programs through the Alaska Department of Commerce, Community, and Economic Development.

The Legislature relies on state ranked lists to prioritize where to direct funding to capital projects for K-12 schools, the university system and the court system.

For K-12 schools, the state’s current major maintenance list totals over $400 million needed for 103 school projects and repairs. Stedman said he recognized this year’s capital budget will only fund a fraction of those.

“Hopefully we get a quarter of it done, or something like that, but it’d be nice to retire the entire list,” Stedman said.

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The draft budget would fund the top 15 school projects on the list, plus funds for three other schools in need of emergency fuel tank repairs. The top projects range from roof and boiler replacements to septic systems, fire suppression and safety upgrades in schools from Fairbanks to the Aleutian Islands.

In order to distribute funds more widely, members of the finance committee reduced funding for one project in Galena, in the Western Interior of Alaska, from roughly $35 million to $5 million for renovations to the Sydney C. Huntington Elementary and High Schools. They also allocated $17 million towards rebuilding the school in Stebbins in Western Alaska, after it burned down in 2024.

The Senate draft also adds nearly $14 million in funding for the state-run Mt. Edgecumbe High School, which has been the focus of public attention and concern after a quarter of students disenrolled this year. The additional facilities dollars include $10 million to remodel the dining hall, $3.1 million to replace dorm windows, $460,000 to replace dorm furniture, $50,000 to replace mattresses and $125,000 to replace aging laundry machines.

Finance members added $17 million to fund the top nine projects across the University of Alaska system — three projects each within the three major campuses.

Sen. Jesse Kiehl, D-Juneau, serves on the finance committee and his district includes University of Alaska Southeast. He described the proposed funds as a “nickel” compared to the “colossal” deferred maintenance needs of the university system.

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“That’s been built by Legislatures and Boards of Regents for 40 years,” he said on Wednesday, adding that it is a shared responsibility to put funding towards repairs and upgrades.

“The Constitution makes them a separate body within the executive branch that puts a lot of responsibility on them, too, more than the general state government,” he said “So university major maintenance is its own huge problem.”

The draft budget also includes $5.7 million for upgrades to state court facilities, mostly targeted to Anchorage and Sitka. It contains nearly $10 million for workforce development programs geared at the construction and oil and gas sectors, including for the Fairbanks Pipeline Training Center and Alaska Vocational Technical Center in Seward.

An amendment to add $25 million to the draft budget for the Port of Anchorage, sponsored by Sen. Kelly Merrick, R-Eagle River, was voted down on Tuesday by a 5 to 2 vote.

Before voting against the proposal, finance co-chair Sen. Lyman Hoffman, D-Bethel, said during committee deliberations the priority this year is to fund as many school maintenance projects on the list as possible, saying “schools are falling apart” and must be maintained to prevent further deterioration.

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“Students that are trying to learn deserve better,” Hoffman said. “And if we are not able to provide this major maintenance, we are going to see these schools continue to crumble, and the financial burden to the state of Alaska will be hundreds of millions of dollars to rebuild schools.”

More funding for school maintenance and other capital projects could be added by the Alaska House of Representatives, who will take up the draft budget bill after it’s approved by the Senate in the coming weeks.



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Bear injures two US soldiers during military training in Alaska | The Jerusalem Post

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Bear injures two US soldiers during military training in Alaska | The Jerusalem Post


Two US soldiers were wounded by a brown bear during a training exercise in Alaska on Thursday, the US Army stated.

Anchorage Daily News reported that the soldiers were from the 11th Airborne Division, and that the exercise had been a “land navigation training event” near Joint Base Elmendorf-Richardson.

State wildlife officials said that the bear attack seemed to be a defensive one, from a bear which had recently emerged from its den. Staff members from the Alaska Department of Fish and Game collected evidence at the scene in an attempt to learn more about the bear, such as its species and gender.

“The incident is currently under investigation, and we are working closely with installation authorities and local wildlife officials to gather all relevant information and ensure the safety of all personnel in the area,” the 11th Airborne Division said in a statement, reported ABC News.

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ABC News also cited an 11th Airborne Division spokesperson, Lt.-Col. Jo Nederhoed, who said that the two soldiers had been seriously wounded, but were receiving care at a hospital in Anchorage, and had shown improvement by Saturday morning.

“We hope both individuals have a full and quick recovery, and our thoughts are with them during this time,” Fish and Game Regional Supervisor Cyndi Wardlow said in a statement reported by Anchorage Daily News. “In this case, having bear spray with them in the field may have saved their lives.” 

Both of the soldiers reportedly had and used bear spray during the attack.

The bear’s condition and whereabouts are currently unknown.





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Travel prices are going up, up and away. Here’s what to watch.

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Travel prices are going up, up and away. Here’s what to watch.


Up, up and away … that’s where most travel prices are going.

It’s true. Not only are our nation’s geopolitical thrusts in the Mideast affecting the cost of your fill-ups, every component of your trip from airfares to car rentals and hotel stays are subject to price hikes.

Imagine filling up a jetliner with jet fuel that’s doubled in price. It’s enough to melt your credit card, regardless of the number of points you get for every dollar spent!

Because the price of oil affects everything, higher prices are eating away at your travel budget in many ways.

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Bag fees

There’s lots of press on this. All airlines are increasing their checked-bag fees because of the jump in fuel prices.

Back in 2009, Alaska Airlines instituted a $15 fee for the first checked bag and $25 for the second bag. At the time, there was no charge for the first bag and a second bag was $25.

Last week, Alaska Airlines, along with other major airlines, increased its fees to $45 for the first checked bag and $55 for the second bag. Delta Air Lines charges the same.

Even if the cost of oil comes down, I don’t expect bag fees will ever be reduced.

Travelers who live in Alaska are somewhat insulated from the new hikes because both Delta and Alaska Airlines offer two free checked bags, with conditions:

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1. Alaska offers two free checked bags for travelers flying to or from Alaska who are enrolled in Club 49. This does not affect other flights on Alaska. Separately, ATMOS credit card holders can get a free checked bag. Also, elite members of the ATMOS scheme get one or two free checked bags systemwide.

2. Delta offers two free checked bags for travelers flying to or from Alaska who are SkyMiles members who live in Alaska. Again, this does not apply to other Delta flights. Separately, Delta American Express cardholders can get a free checked bag.

3. Elite-level travelers with the oneworld airline cartel, including Alaska Airlines, can get one or two checked bags on American, British Airways, Japan Airlines, Qantas or other oneworld carriers.

[Anchorage’s international airport rolls out self-driving wheelchairs]

Main Cabin vs. Basic Economy

The spread between the lowest available price, Basic Economy, and a more flexible ticket, Main Cabin, has increased. While the difference used to be $20-$30 each way when the Basic Economy scheme was introduced in 2018, the round-trip upcharge now can exceed $100.

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For example, the lowest Basic fare to Portland is $337 round-trip on Alaska Airlines. The upcharge to Main Cabin, with full loyalty points, pre-assigned seats and more flexibility on changes and cancellations, is $447, a 33% upcharge.

This trend is not specifically attributable to the new Iran War. It’s just a cost that continues to rise.

New fees

I’m impressed at the creativity of airline people who dream up new fees. Here are some of my favorites from Alaska Airlines:

1. Phone reservations: $15

2. Partner award booking fee: $12.50

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3. Pet travel fee: $100 in the cabin, $200 in the baggage compartment with a kennel

4. Left on board item return fee: $20

On Condor Airlines, operating the only nonstop service from Anchorage to Europe, travelers can choose from four different bundles in economy class. The least-expensive, Economy Zero, from $840 round-trip, features fees for travelers:

1. Carry-on bag fee, up to 8kg: $35; a small bag like a purse always is included for free

2. Checked bag: $75

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3. Airport check-in: $30

All three of these fees are included in the next-highest fare bucket, Economy Classic, from $900 round-trip. It’s cheaper to buy the bundle than it is to buy the components a la carte. Seat assignments are additional, from $25 for economy.

Airfares on the rise

There are a few good deals available for travel to select West Coast/Intermountain destinations in May, including:

1. Anchorage-San Francisco on Alaska Airlines, from $307 round-trip. Fly May 15-28 only. Add $90 round-trip for Main cabin.

2. Anchorage-Los Angeles on Alaska Airlines, from $317 round-trip. May 15-25 only. Add $90 round-trip for Main.

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3. Anchorage-Phoenix on United, Delta or Alaska, from $267-$287 round-trip. Fly May 8-June 9 only. Add $90-$100 for Main.

4. Anchorage-Denver $357 round-trip on Delta. Fly May 8-June 9 only. Add $90 round-trip for Main.

For travel to other destinations, or later in the summer, be prepared to pay more.

Flying to Hawaii? Alaska Air’s nonstop prices out at $706 round-trip between May 30 and June 6. Add $110 round-trip for Main.

Nonstop flights from Anchorage to Salt Lake City start at $669 round-trip with Delta on May 17. That’s $100 more than the cost for the same flights last month. Add $90 more for Main.

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Hotel costs continue to rise, accompanied by pesky resort fees.

The Outrigger on the Beach in Waikiki is a very nice beachfront hotel. It’s not plush, or the nicest property. But it’s solid. The cost is $334 per night.

But there’s more: a $50 per night resort fee, plus a variety of taxes and charges, totaling $112.55 per night.

Down in Seattle, the Sound Hotel in the Belltown neighborhood is marketed by Hilton. The discounted rate for “Honors” members — it’s free to join — is $313.34 per night for a king room in late May. Taxes and fees add an extra $56.40 per night.

There’s no appreciable bump yet for hotel rates as a result of the oil price surge. Yet. But if these hotel rates seem high, they’re in line with hotel rates in Anchorage this summer. At the Sheraton in Anchorage in June, it’s $450 per night, plus $54 in taxes and fees, when booked at Expedia.

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Car rentals are not cheap

My go-to site for car rentals is the Costco site, which compares major brands and automatically includes Costco discounts.

In Las Vegas, for a one-day rental in May, Budget charges $67 per day, which includes taxes and fees of $22.77. In Anchorage, the same kind of car, medium SUV, costs $92.97 with Alamo.

The biggest differences so far in car rental rates seems to be the bill you’ll pay when you fill up the tank before returning. There’s no appreciable jump in prices because of the new war.

When it comes to making travel arrangements for the spring and summer, it’s more risky making completely non-refundable arrangements.

I made the decision to purchase most of my summer travel plans in advance, but only after determining I would not need to change the dates. Particularly with airline tickets, it’s expensive to change your dates.

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There’s lots of uncertainty regarding travel arrangements, particularly international travel. As fuel prices go up due to oil shortages, travel companies will look for ways to recoup the increased costs. In most cases, those higher costs will be borne by travelers.





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