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Can you trust companies that say their plastic products are recyclable? US regulators may crack down on deceptive claims

Keurig was fined for falsely claiming its K-Cup pods were recyclable. Many plastic items labeled recyclable end up as waste. The FTC is revising guidelines to clarify recyclability claims.

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Keurig, maker of K-Cup single-use coffee pods, was recently fined for claiming the pods were recyclable. Dixie D. Vereen/For The Washington Post, via Getty Images

Patrick Parenteau, Vermont Law & Graduate School

Plastic is a fast-growing segment of U.S. municipal solid waste, and most of it ends up in the environment. Just 9% of plastic collected in municipal solid waste was recycled as of 2018, the most recent year for which national data is available. The rest was burned in waste-to-energy plants or buried in landfills.

Manufacturers assert that better recycling is the optimal way to reduce plastic pollution. But critics argue that the industry often exaggerates how readily items can actually be recycled. In September 2024, beverage company Keurig Dr Pepper was fined US$1.5 million for inaccurately claiming that its K-Cup coffee pods were recyclable after two large recycling companies said they could not process the cups. California is suing ExxonMobil, accusing the company of falsely promoting plastic products as recyclable.

Environmental law scholar Patrick Parenteau explains why claims about recyclability have confused consumers, and how forthcoming guidelines from the U.S. Federal Trade Commission may address this problem.

Why do manufacturers need guidance on what ‘recyclable’ means?

Stating that a product is recyclable means that it can be collected, separated or otherwise recovered from the waste stream for reuse or in the manufacture of other products. But defining exactly what that means is difficult for several reasons:

  • Different U.S. states have different recycling regulations and guidelines, which can affect what is considered recyclable in a given location.
  • The availability and quality of recycling infrastructure also varies from place to place. Even if a product technically is recyclable, a local recycling facility may not be able to accept it because its equipment can’t process it.
  • If no market demand for the recycled material exists, recycling companies may be unlikely to accept it.

https://www.youtube.com/embed/RwppgbZwrpg?wmode=transparent&start=0 Most plastic goods that consumers put in their recycle bins aren’t recycled, despite the “chasing arrow” label. Critics say manufacturers have deceived the public to avert plastic bans.

What is the Federal Trade Commission’s role?

Public concern about plastic pollution has skyrocketed in recent years. A 2020 survey found that globally, 91% of consumers were concerned about plastic waste.

Once plastic enters the environment, it can take 1,000 years or more to decompose, depending on environmental conditions. Exposure through ingestion, inhalation or in drinking water poses potential risks to human health and wildlife.

The Federal Trade Commission’s role is to protect the public from deceptive or unfair business practices and unfair methods of competition. Every year, it brings hundreds of cases against individuals and companies for violating consumer protection and competition laws. These cases can involve fraud, scams, identity theft, false advertising, privacy violations, anticompetitive behavior and more.

The FTC publishes references called the Green Guides, which are designed to help marketers avoid making environmental claims that mislead consumers. The guides were first issued in 1992 and were revised in 1996, 1998 and 2012. While the guides themselves are not enforceable, the commission can use them to prove that a claim is deceptive, in violation of federal law.

The guidance they provide includes:

  • General principles that apply to all environmental marketing claims
  • How consumers are likely to interpret claims, and how marketers can substantiate these claims
  • How marketers can qualify their claims to avoid deceiving consumers

The agency monitors environmentally themed marketing for potentially deceptive claims and evaluates compliance with the FTC Act of 1914 by reference to the Green Guides. Marketing inconsistent with the Green Guides may be considered unfair or deceptive under Section 5 of the FTC Act.

Courts also refer to the Green Guides when they evaluate claims for false advertising in private litigation.

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Currently, the Green Guides state that marketers should qualify claims that products are recyclable when recycling facilities are not available to at least 60% of consumers or communities where a product is sold.

How is the agency addressing recyclability claims?

The FTC is reviewing the Green Guides and issued a request for public comment on the guides in late 2022. In May 2023, the agency convened a workshop called Talking Trash at the FTC: Recycling Claims and the Green Guides.

This meeting focused on the 60% processing threshold for recyclability claims. It also addressed potential confusion created by the “chasing arrows” recycling symbol, which often identifies the type of plastic resin used in a product, using the numbers 1 through 7.

Many critics argue that consumers may see the symbol and assume that a product is recyclable, even though municipal recycling programs are not widely available for some types of resins. Other labels use a version of the symbol for products such as single-use grocery bags that aren’t accepted in most curbside recycling programs but can be dropped off at designated stores for recycling.

The FTC has sought public comments on specific characteristics that make products recyclable. It also has asked whether unqualified recyclability claims should be made when recycling facilities are available to a “substantial majority” of consumers or communities where the item is sold – even if the item is not ultimately recycled due to market demand, budgetary constraints or other factors.

What are companies and environmental advocates saying?

Organizations representing environmental interests, recycling businesses and the waste and packaging industries have offered numerous suggestions for updating the Green Guides. For example:

  • The U.S. Environmental Protection Agency urged the FTC to increase its threshold for recyclability claims beyond the current 60% rate. The EPA said that products and packaging “should not be considered recyclable without strong end markets in which they can reliably be sold for a price higher than the cost of disposal.” It also recommended requiring companies’ recyclability claims to be reviewed and certified by outside experts.
  • The Consumer Brands Association, which represents the U.S. Chamber of Commerce, the Plastics Industry Association and other commercial interests, called for more research into public understanding of environmental marketing claims. To help companies avoid making deceptive advertising claims, it urged the FTC to provide more detailed explanations, with examples of acceptable marketing.
  • The Association of Plastic Recyclers encouraged the FTC to increase enforcement against deceptive unqualified claims of both recyclability and recycled content. It recommended providing stronger, more prescriptive guidance; publicizing specific examples from the marketplace of deceptive representations; and sending warning letters when companies appear to be making unsubstantiated claims. It also asked the FTC to maintain its current recyclability claim threshold at 60% and to update the Green Guides again within five years instead of 10.
  • A coalition of environmental groups, including Greenpeace USA and the Center for Biological Diversity, urged the commission to codify the Green Guides into binding rules. They also argued that for goods that require in-store drop-off, companies should have to prove that processors can capture and recycle at least 75% of the material.

The FTC has not set a date for publishing a final version of the revised Green Guides. All eyes will be on the agency to see how far it is willing to go to police recycling claims by manufacturers in this $90 billion U.S. industry.

Patrick Parenteau, Professor of Law Emeritus, Vermont Law & Graduate School

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/

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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.

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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.
People walk along a street in Nuuk, the capital of Greenland. Ina Fassbender/AFP via Getty Images

Susan A. Kaplan, Bowdoin College and Genevieve LeMoine, Bowdoin College

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 Arctic anthropologists 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.

https://datawrapper.dwcdn.net/WqWx2/1

Arrivals from the west

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.

file 20260127 56 2dj9qg.jpg?ixlib=rb 4.1
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.

The U.S. formally recognized Denmark’s claim to the island in 1916 when the Americans purchased the Danish West Indies, which are now the U.S. Virgin Islands. And in 1921, Denmark declared sovereignty over the whole of Greenland, a claim upheld in 1933 by the Permanent Court of International Justice. But Greenlanders were not consulted about these decisions.

People gather outdoors carrying red and white flags.
People protest President Donald Trump’s desire to own Greenland outside the U.S. consulate in Nuuk, Greenland, in January 2026. AP Photo/Evgeniy Maloletka

The world arrives

file 20260127 56 l931il.jpg?ixlib=rb 4.1
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.

Susan A. Kaplan, Professor of Anthropology, Director of Peary-MacMillan Arctic Museum and Arctic Studies Center, Bowdoin College and Genevieve LeMoine, Curator, Peary-MacMillan Arctic Museum and Arctic Studies Center, Bowdoin College

This article is republished from The Conversation under a Creative Commons license. Read the original article.

STM Daily News is a vibrant news blog dedicated to sharing the brighter side of human experiences. Emphasizing positive, uplifting stories, the site focuses on delivering inspiring, informative, and well-researched content. With a commitment to accurate, fair, and responsible journalism, STM Daily News aims to foster a community of readers passionate about positive change and engaged in meaningful conversations. Join the movement and explore stories that celebrate the positive impacts shaping our world. 

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Local News

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.

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Arizona Republicans are opposing a proposed Valley Metro light rail extension toward the State Capitol, citing concerns over cost, ridership, and long-term value, while supporters argue the project would improve access, equity, and connectivity for west Phoenix.
Image credit: Valley Metro

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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The Earth

How the polar vortex and warm ocean intensified a major US winter storm

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Last Updated on January 28, 2026 by Daily News Staff

People walking in urban setting. Polar vortex.
Boston and much of the U.S. faced a cold winter blast in January 2026. Craig F. Walker/The Boston Globe via Getty Images

How the polar vortex and warm ocean intensified a major US winter storm

Mathew Barlow, UMass Lowell and Judah Cohen, Massachusetts Institute of Technology (MIT)

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.

A globe showing the polar vortex and jet stream overlapping over the area where the storm hit.
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.

A map of storm warnings on Jan. 24, 2026.
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.

file 20260124 56 ufh1tk
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.

file 20260124 56 1rstmk
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.

The biggest swings in the jet stream are associated with the most energy. Under the right conditions, that energy can bounce off the polar vortex back down into the troposphere, exaggerating the north-south swings of the jet stream across North America and making severe winter weather more likely.

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.

Some research suggests that even in a warming environment, cold events, while occurring less frequently, may still remain relatively severe in some locations.

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.

Two globes, one showing a stable polar vortex and the other a disrupted version that brings brutal cold to the South.
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.

The opposing effects make it complicated to assess the potential change to average storm strength. However, intense events do not necessarily change in the same way as average events. On balance, it appears that the most intense winter storms may be becoming more intense.

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.

Mathew Barlow, Professor of Climate Science, UMass Lowell and Judah Cohen, Climate scientist, Massachusetts Institute of Technology (MIT)

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The science section of our news blog STM Daily News provides readers with captivating and up-to-date information on the latest scientific discoveries, breakthroughs, and innovations across various fields. We offer engaging and accessible content, ensuring that readers with different levels of scientific knowledge can stay informed. Whether it’s exploring advancements in medicine, astronomy, technology, or environmental sciences, our science section strives to shed light on the intriguing world of scientific exploration and its profound impact on our daily lives. From thought-provoking articles to informative interviews with experts in the field, STM Daily News Science offers a harmonious blend of factual reporting, analysis, and exploration, making it a go-to source for science enthusiasts and curious minds alike. https://stmdailynews.com/category/science/


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