Tourists watch smoke from the Dragon Bravo wildfire float through the Grand Canyon. Scott Olson/Getty Images
Grand Canyon’s Dragon Bravo megafire shows the growing wildfire threat to water systems
Faith Kearns, Arizona State University As wildfire crews battled the Dragon Bravo Fire on the Grand Canyon’s North Rim in July 2025, the air turned toxic. A chlorine gas leak had erupted from the park’s water treatment facility as the building burned, forcing firefighters to pull back. The water treatment facility is part of a system that draws water from a fragile spring. It’s the only water source and system for the park facilities on both rims, including visitor lodging and park service housing. The fire also damaged some of the area’s water pipes and equipment, leaving fire crews to rely on a fleet of large water trucks to haul in water and raising concerns about contamination risks to the water system itself. By mid-August, Dragon Bravo was a “megafire,” having burned over 140,000 acres, and was one of the largest fires in Arizona history. It had destroyed more than 70 structures, including the iconic Grand Canyon Lodge, and sent smoke across the region.A National Park Service worker assesses a split in an exposed section of the Grand Canyon’s fragile water lines in 2014. The water pipeline, installed in the mid-1960s, feeds water from Roaring Springs, located approximately 3,500 feet below the North Rim.Grand Canyon National Park via Flickr Wildfires like this are increasingly affecting water supplies across the U.S. and creating a compounding crisis that experts in water, utilities and emergency management are only beginning to wrestle with.
A pattern across the West
Before 2017, when the Tubbs Fire burned through neighborhoods on the edge of Santa Rosa, California, most research on the nexus of wildfire and water had focused on issues such as drought and how climate change effects ecosystems. The Tubbs Fire destroyed thousands of buildings and also melted plastic water pipes. After the fire, a resident’s complaint about the taste and odor of tap water led to the discovery that the fire’s damage had introduced contaminants including benzene, a carcinogen, into parts of the public water system. It quickly became obvious that the damage discovered at the Tubbs Fire was not unique. Similar damage and pollutants were discovered in another California water system after the 2018 Camp Fire destroyed much of Paradise, a town of over 25,000 people. The list of incidents goes on. In southern Oregon, the 2020 Almeda Fire damaged water pipes in buildings, leaving water to flow freely. That contributed to low system pressure just when people fighting the fire needed the water.Water meters and pipes are vulnerable to damage during a fire.Andrew Whelton/Purdue University, CC BY In Colorado, the 2021 Marshall Fire burned through urban water lines, damaging six public drinking-water systems along with more than 1,000 structures in the Boulder suburbs. All six systems lost power, which in some cases led to a loss of water pressure, hampering firefighting. As firefighters worked on the Marshall Fire, water system operators raced to keep water flowing and contaminants from being transported into the water systems. But tests still detected chemical contamination, including benzene, in parts of the systems a few weeks later. Then, in January 2025, the Los Angeles fires supercharged concerns about water and wildfire. As firefighters raced to put out multiple fires, hydrants ran dry in some parts of the region, while others at higher elevations depressurized. Ultimately, over 16,000 structures were damaged, leading to insured losses estimated to be as high as US$45 billion.Water supplies are crucial to fighting fires. In cities, fire crews like this one battling the Palisades Fire in Los Angeles in January 2025 can often rely on hydrants. But water systems can lose pressure and potentially the power to run their pumps during fires.AP Photo/Etienne Laurent Water infrastructure is not merely collateral damage during wildfires – it is now a central concern. It also raises the question: What can residents, first responders and decision-makers reasonably expect from water systems that weren’t designed with today’s disasters in mind?
Addressing the growing fire and water challenge
While no two water systems or fires are the same, nearly every water system component, ranging from storage tanks to pipelines to treatment plants, is susceptible to damage. The Grand Canyon’s Roaring Springs system exemplifies the complexity and fragility of older systems. It supplies water to both rims of the park through a decades-old network of gravity-fed pipes and tunnels and includes the water treatment facility where firefighters were forced to retreat because of the chlorine leak. Many water systems have vulnerable points within or near flammable wildlands, such as exposed pump houses that are crucial for pulling water from lower elevations to where it is needed.A stand pipe at Zorthian Ranch in Altadena, Calif., failed during the January 2025 fire there, making it even more difficult for Alan Zorthian to fight the flames sweeping across his property. He used a pump drawing water from a swimming pool to try to fight the flames, but numerous structures were destroyed.Myung J. Chun/Los Angeles Times via Getty Images In addition, hazardous materials such as chlorine or ammonia may be stored on-site and require special considerations in high fire risk areas. Staff capacity is often limited; some small utilities depend on a single operator, and budgets may be too constrained to modernize aging infrastructure or implement fire mitigation measures. As climate change intensifies wildfire seasons, these vulnerabilities can become disaster risks that require making water infrastructure a more integral part of fighting and preparing for wildfires.
Prioritizing fire-resistant construction, better shielding of chemicals and, in some cases, decentralizing water systems can help protect critical facilities, particularly in high-risk zones. Having backup power supplies, mobile treatment systems and alternate water sources are essential to provide more security in the face of a wildfire.
Emergency command protocols and interagency coordination are most effective when they include water utilities as essential partners in all phases of emergency response, from planning to response to recovery. Fire crews and water operators can also benefit from joint training in emergency response, especially when system failure could hinder firefighting itself.
Longer term, protecting upstream watersheds from severe fire by thinning forests and using controlled burns, along with erosion control measures, can help maintain water quality and reduce water pollution in the aftermath of fires.
Smaller and more isolated systems, particularly in tribal or low-income communities, often need assistance to plan or implement new measures. These systems may require technical assistance, and regional support hubs could support communities with additional resources, including personnel and equipment, so they can respond quickly when crises strike.
Looking ahead
The Dragon Bravo Fire isn’t just a wildfire story, it’s also a water story, and it signals a larger, emerging challenge across the West. As fire seasons expand in size and complexity, the overlap between fire and water will only grow. The Grand Canyon fire offers a stark illustration of how wildfire can escalate into a multifaceted infrastructure crisis: Fire can damage water infrastructure, which in turn limits firefighting capabilities and stresses water supplies. The question is not whether this will happen again. It’s how prepared communities will be when it does. Faith Kearns, Scientist and Director of Research Communication for the Arizona Water Innovation Initiative, Arizona State University This article is republished from The Conversation under a Creative Commons license. Read the original article.
Greenland’s Inuit have spent decades fighting for self-determination
The article highlights the Inuit communities in Greenland amid global discussions about the island’s ownership, particularly regarding U.S. President Trump’s interest. It chronicles the Inuit’s historical presence, their traditional lifestyles, and the ongoing struggle for self-determination. Despite colonial influences, modern Kalaallit strive for recognition and independence.
Amid the discussion between U.S. President Donald Trump and Danish and European leaders about who should own Greenland, the Inuit who live there and call it home aren’t getting much attention.
The Kalaallit (Inuit of West Greenland), the Tunumi (Inuit of East Greenland) and the Inughuit (Inuit of North Greenland) together represent nearly 90% of the population of Greenland, which totals about 57,000 people across 830,000 square miles (2.1 million square kilometers).
We are Arcticanthropologists who work in a museum focused on the Arctic and its people. One of the areas we study is a land whose inhabitants call it Kalaallit Nunaat, or land of the Kalaallit. Known in English as Greenland, it is an Indigenous nation whose relatively few people have been working for decades to reclaim their right to self-determination.
For nearly 5,000 years, northwestern Greenland – including the area that is now the U.S. Space Force’s Pituffik Space Base, formerly known as Thule Air Force Base – was the island’s main entry point. A succession of Indigenous groups moved eastward from the Bering Strait region and settled in Siberia, Alaska, Canada and Greenland.
Approximately 1,000 years ago, the ancestors of the Inuit living in Greenland today arrived in that area with sophisticated technologies that allowed them to thrive in a dynamic Arctic environment where minor mishaps can have serious consequences. They hunted animals using specialized technologies and tools, including kayaks, dog-drawn sleds, complex harpoons, and snow goggles made from wood or bone with slits cut into them. They dressed in highly engineered garments made from animal fur that kept them warm and dry in all conditions.
Their tools and clothing were imbued with symbolic meanings that reflected their worldview, in which humans and animals are interdependent. Inughuit families who live in the region today continue to hunt and fish, while navigating a warming climate.Local people fish from a small boat by an iceberg with an ice cave, near Ilulissat, in 2008. Bryan Alexander, courtesy of the Peary-MacMillan Arctic Museum, Bowdoin College, CC BY-NC-ND
Arrivals from the east
At Qassiarsuk in south Greenland, around the time Inuit arrived in the north, Erik the Red established the first Norse farm, Brattahlíð, in 986, and sent word back to Iceland to encourage others to join him, as described in an online exhibit at the Greenland National Museum. Numerous Norse families followed and established pastoral farms in the region.
As Inuit expanded southward, they encountered the Norse farmers. Inuit and Norse traded, but relations were sometimes tense: Inuit oral histories and Norse sagas describe some violent interactions. The two groups maintained distinctly different approaches to living on the land that rims Greenland’s massive ice sheet. The Norse were very place-based, while the Inuit moved seasonally, hunting around islands, bays and fjords.
As the Little Ice Age set in early in the 14th century, and temperatures dropped in the Northern Hemisphere, the Norse were not equipped to adjust to the changing conditions. Their colonies faltered and by 1500 had disappeared. By contrast, the mobile Inuit took a more flexible approach and hunted both land and marine mammals according to their availability. They continued living in the region without much change to their lifestyle.
A center of activity
In Nuuk, the modern capital of Greenland, an imposing and controversial statue of missionary Hans Egede commemorates his arrival in 1721 to establish a Lutheran mission in a place he called Godthåb.
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In 1776, as trade became more important, the Danish government established the Royal Greenland Trading Department, a trading monopoly that administered the communities on the west coast of Greenland as a closed colony for the next 150 years.
By the 19th century some Kalaallit families who lived in Nuuk/Godthåb had formed an educated, urban class of ministers, educators, artists and writers, although Danish colonists continued to rule.
Meanwhile, Kalaallit families in small coastal communities continued to engage in traditional economic and social activities, based on respect of animals and sharing of resources.
On the more remote east coast and in the far north, colonization took root more slowly, leaving explorers such as American Robert Peary and traders such as Danish-Greenlandic Knud Rasmussen a free hand to employ and trade with local people.
A 1944 ad urging U.S. customers to buy shortwave radios touts contact with the people of Greenland as one benefit. Courtesy of the Peary-MacMillan Arctic Museum, Bowdoin College, CC BY-NC-ND
World War II brought the outside world to Greenland’s door. With Denmark under Nazi control, the U.S. took responsibility for protecting the strategically important island of Greenland and built military bases on both the east and west coasts. The U.S. made efforts to keep military personnel and Kalaallit apart but were not entirely successful, and some visiting and trading went on. Radios and broadcast news also spread, and Kalaallit began to gain a sense of the world beyond their borders.
The Cold War brought more changes, including the forced relocation of 27 Inughuit families living near the newly constructed U.S. Air Force base at Thule to Qaanaaq, where they lived in tents until small wooden homes were built.
In 1953, Denmark revised parts of its constitution, including changing the status of Greenland from a colony to one of the nation’s counties, thereby making all Kalaallit residents of Greenland also full-fledged citizens of Denmark. For the first time, Kalaallit had elected representatives in the Danish parliament.
Denmark also increased assimilation efforts, promoting the Danish language and culture at the expense of Kalaallisut, the Greenlandic language. Among other projects, the Danish authorities sent Greenlandic children to residential schools in Denmark.
In Nuuk in the 1970s, a new generation of young Kalaallit politicians emerged, eager to protect and promote the use of Kalaallisut and gain greater control over Greenland’s affairs. The rock band Sumé, singing protest songs in Kalaallisut, contributed to the political awakening. https://www.youtube.com/embed/qe-f6jleXFs?wmode=transparent&start=0 Sumé, a rock band singing in Kalaallisut, the Greenlandic language, helped galvanize a political movement for self-determination in the 1970s.
In a 1979 Greenland-wide referendum, a substantial majority of Kalaallit voters opted for what was called “home rule” within the Danish Kingdom. That meant a parliament of elected Kalaallit representatives handled internal affairs, such as education and social welfare, while Denmark retained control of foreign affairs and mineral rights.
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However, the push for full independence from Denmark continued: In 2009, home rule was replaced by a policy of self-government, which outlines a clear path to independence from Denmark, based on negotiations following a potential future referendum vote by Greenlanders. Self-government also allows Greenland to assert and benefit from control over its mineral resources, but not to manage foreign affairs.
Today, Nuuk is a busy, vibrant, modern city. Life is quieter in smaller settlements, where hunting and fishing are still a way of life. While contemporary Greenland encompasses this range of lifestyles, Kalaallit are unified in their desire for self-determination. Greenland’s leaders have delivered this message clearly to the public and to the White House directly.
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Why Arizona Republicans Are Pushing Back on Light Rail to the State Capitol — and What It Means for the West Valley
Arizona’s debate over a proposed light rail extension to the State Capitol has intensified. Supporters argue it promotes connectivity and equity, while Republicans oppose it due to cost concerns and a preference for car-centric infrastructure. The outcome will impact future west-side transit expansions and shape regional transportation priorities.
Arizona’s long-running debate over public transit has flared up again, this time over a proposed Valley Metro light rail extension that would bring rail service closer to the Arizona State Capitol complex. While Phoenix and Valley Metro leaders argue the project is a logical next step in regional mobility, Republican leaders at the state Capitol have mounted strong opposition — creating uncertainty not just for this segment, but for future west-side expansions.
The Case for the Capitol Light Rail Extension
Supporters of the project, including Valley Metro officials, Phoenix city leaders, transit advocates, and many west Phoenix residents, argue that extending light rail toward the Capitol area is both practical and symbolic.
From a planning standpoint, the Capitol is a major employment center that draws thousands of workers, visitors, and students. Transit planners say rail access would reduce congestion, improve air quality, and provide reliable transportation for residents who already depend heavily on public transit.
Proponents also emphasize equity. West Phoenix has historically received fewer infrastructure investments than other parts of the metro area, despite strong transit ridership. For supporters, extending rail service westward is about connecting communities to jobs, education, and government services — not politics.
Why is Arizona fighting over a light rail line to the State Capitol?
There is also a broader regional argument: light rail lines function best as part of a connected network. Leaving a gap near a central civic destination, supporters say, undermines long-term system efficiency.
Why Republican Lawmakers Are Opposed
Republican leaders in the Arizona Legislature see the project very differently.
One major issue is cost. GOP lawmakers frequently point to the rising price of light rail construction, which has increased significantly over the past decade. They argue that rail projects deliver limited benefit compared to their expense and that bus service or roadway improvements could move more people at lower cost.
Usage is another concern. Critics note that light rail serves a relatively small percentage of total commuters in the Phoenix metro area and requires ongoing public subsidies to operate. From this perspective, expanding rail further — especially into politically sensitive areas like the Capitol — is viewed as fiscally irresponsible.
There is also a political and legal dimension. In recent years, Republican lawmakers passed legislation restricting light rail construction near the Capitol complex. While framed as a land-use and security issue, critics argue it reflects deeper ideological opposition to rail transit and urban-oriented infrastructure.
Finally, some GOP leaders simply prefer different transportation priorities. Arizona remains a car-centric state, and many Republican officials believe future investments should focus on highways, autonomous vehicle technology, or flexible transit options rather than fixed rail.
A Political Standoff with Real Transit Consequences
The dispute has become a high-stakes standoff between the Republican-controlled Legislature and Democratic leaders at the city and regional level. While lawmakers may not be able to directly cancel the project, they have significant leverage through funding approvals, oversight committees, and future legislation.
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This uncertainty creates challenges for Valley Metro, which relies on long-term planning, federal funding commitments, and voter-approved local taxes. Transit systems work best with predictability — and political volatility can drive up costs or delay construction.
What This Means for West Valley Light Rail Expansion
The biggest question is what happens next for west Phoenix and the broader West Valley.
If the Capitol-area extension is altered or blocked, Valley Metro may be forced to redesign routes that avoid the restricted area, potentially making service less direct or less useful. That could weaken the case for future westward expansions toward areas like Maryvale or even farther west.
On the other hand, the controversy has also drawn renewed attention to west-side transit needs. Some advocates believe the political fight could energize local support, leading to stronger community backing and clearer messaging about why rail matters in west Phoenix.
Long term, the outcome may set a precedent. If state lawmakers successfully limit rail construction through legislative action, it could signal tighter constraints on future expansions. If cities push forward despite opposition, it may reaffirm local control over transportation planning.
The Bigger Picture
At its core, the debate over light rail to the Arizona State Capitol reflects a broader clash of visions for the region’s future: one focused on dense, transit-oriented growth, and another centered on fiscal restraint and automobile mobility.
For residents of the West Valley, the stakes are tangible. The decision will shape access to jobs, education, and public services for decades. Whether the project moves forward as planned, is rerouted, or delayed entirely, it will leave a lasting imprint on how — and for whom — the Valley’s transit system grows.
As Phoenix continues to expand westward, the question remains unresolved: will light rail be allowed to follow?
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A severe winter storm that brought crippling freezing rain, sleet and snow to a large part of the U.S. in late January 2026 left a mess in states from New Mexico to New England. Hundreds of thousands of people lost power across the South as ice pulled down tree branches and power lines, more than a foot of snow fell in parts of the Midwest and Northeast, and many states faced bitter cold that was expected to linger for days.
The sudden blast may have come as a shock to many Americans after a mostly mild start to winter, but that warmth may have partly contributed to the ferocity of the storm.
As atmospheric and climate scientists, we conduct research that aims to improve understanding of extreme weather, including what makes it more or less likely to occur and how climate change might or might not play a role.
To understand what Americans are experiencing with this winter blast, we need to look more than 20 miles above the surface of Earth, to the stratospheric polar vortex.On the morning of Jan. 26, 2026, the freezing line, shown in white, reached far into Texas. The light band with arrows indicates the jet stream, and the dark band indicates the stratospheric polar vortex. The jet stream is shown at about 3.5 miles above the surface, a typical height for tracking storm systems. The polar vortex is approximately 20 miles above the surface. Mathew Barlow, CC BY
What creates a severe winter storm like this?
Multiple weather factors have to come together to produce such a large and severe storm.
Winter storms typically develop where there are sharp temperature contrasts near the surface and a southward dip in the jet stream, the narrow band of fast-moving air that steers weather systems. If there is a substantial source of moisture, the storms can produce heavy rain or snow.
In late January, a strong Arctic air mass from the north was creating the temperature contrast with warmer air from the south. Multiple disturbances within the jet stream were acting together to create favorable conditions for precipitation, and the storm system was able to pull moisture from the very warm Gulf of Mexico.The National Weather Service issued severe storm warnings (pink) on Jan. 24, 2026, for a large swath of the U.S. that could see sleet and heavy snow over the following days, along with ice storm warnings (dark purple) in several states and extreme cold warnings (dark blue). National Weather Service
Where does the polar vortex come in?
The fastest winds of the jet stream occur just below the top of the troposphere, which is the lowest level of the atmosphere and ends about seven miles above Earth’s surface. Weather systems are capped at the top of the troposphere, because the atmosphere above it becomes very stable.
The stratosphere is the next layer up, from about seven miles to about 30 miles. While the stratosphere extends high above weather systems, it can still interact with them through atmospheric waves that move up and down in the atmosphere. These waves are similar to the waves in the jet stream that cause it to dip southward, but they move vertically instead of horizontally.A chart shows how temperatures in the lower layers of the atmosphere change between the troposphere and stratosphere. Miles are on the right, kilometers on the left. NOAA
You’ve probably heard the term “polar vortex” used when an area of cold Arctic air moves far enough southward to influence the United States. That term describes air circulating around the pole, but it can refer to two different circulations, one in the troposphere and one in the stratosphere.
The Northern Hemisphere stratospheric polar vortex is a belt of fast-moving air circulating around the North Pole. It is like a second jet stream, high above the one you may be familiar with from weather graphics, and usually less wavy and closer to the pole.
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Sometimes the stratospheric polar vortex can stretch southward over the United States. When that happens, it creates ideal conditions for the up-and-down movement of waves that connect the stratosphere with severe winter weather at the surface.A stretched stratospheric polar vortex reflects upward waves back down, left, which affects the jet stream and surface weather, right. Mathew Barlow and Judah Cohen, CC BY
The forecast for the January storm showed a close overlap between the southward stretch of the stratospheric polar vortex and the jet stream over the U.S., indicating perfect conditions for cold and snow.
This is what was happening in late January 2026 in the central and eastern U.S.
If the climate is warming, why are we still getting severe winter storms?
Earth is unequivocally warming as human activities release greenhouse gas emissions that trap heat in the atmosphere, and snow amounts are decreasing overall. But that does not mean severe winter weather will never happen again.
One factor may be increasing disruptions to the stratospheric polar vortex, which appear to be linked to the rapid warming of the Arctic with climate change.The polar vortex is a strong band of winds in the stratosphere, normally ringing the North Pole. When it weakens, it can split. The polar jet stream can mirror this upheaval, becoming weaker or wavy. At the surface, cold air is pushed southward in some locations. NOAA
Additionally, a warmer ocean leads to more evaporation, and because a warmer atmosphere can hold more moisture, that means more moisture is available for storms. The process of moisture condensing into rain or snow produces energy for storms as well. However, warming can also reduce the strength of storms by reducing temperature contrasts.
A warmer environment also increases the likelihood that precipitation that would have fallen as snow in previous winters may now be more likely to fall as sleet and freezing rain.
There are still many questions
Scientists are constantly improving the ability to predict and respond to these severe weather events, but there are many questions still to answer.
Much of the data and research in the field relies on a foundation of work by federal employees, including government labs like the National Center for Atmospheric Research, known as NCAR, which has been targeted by the Trump administration for funding cuts. These scientists help develop the crucial models, measuring instruments and data that scientists and forecasters everywhere depend on.
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This article, originally published Jan. 24, 2026, has been updated with details from the weekend storm.
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