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Firefighting planes are dumping ocean water on the Los Angeles fires − why using saltwater is typically a last resort

Firefighters in Los Angeles use seawater to combat wildfires due to freshwater shortages, though this poses risks to ecosystems and equipment.

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A firefighting plane dumps water on one of the fires in the Los Angeles area in January 2025. Brian van der Brug / Los Angeles Times via Getty Images

Patrick Megonigal, Smithsonian Institution

Firefighters battling the deadly wildfires that raced through the Los Angeles area in January 2025 have been hampered by a limited supply of freshwater. So, when the winds are calm enough, skilled pilots flying planes aptly named Super Scoopers are skimming off 1,500 gallons of seawater at a time and dumping it with high precision on the fires.

Using seawater to fight fires can sound like a simple solution – the Pacific Ocean has a seemingly endless supply of water. In emergencies like Southern California is facing, it’s often the only quick solution, though the operation can be risky amid ocean swells.

But seawater also has downsides.

Saltwater corrodes firefighting equipment and may harm ecosystems, especially those like the chaparral shrublands around Los Angeles that aren’t normally exposed to seawater. Gardeners know that small amounts of salt – added, say, as fertilizer – does not harm plants, but excessive salts can stress and kill plants.

While the consequences of adding seawater to ecosystems are not yet well understood, we can gain insights on what to expect by considering the effects of sea-level rise.

A seawater experiment in a coastal forest

As an ecosystem ecologist at the Smithsonian Environmental Research Center, I lead a novel experiment called TEMPEST that was designed to understand how and why historically salt-free coastal forests react to their first exposures to salty water.

Sea-level rise has increased by an average of about 8 inches globally over the past century, and that water has pushed salty water into U.S. forests, farms and neighborhoods that had previously known only freshwater. As the rate of sea-level rise accelerates, storms push seawater ever farther onto the dry land, eventually killing trees and creating ghost forests, a result of climate change that is widespread in the U.S. and globally.

In our TEMPEST test plots, we pump salty water from the nearby Chesapeake Bay into tanks, then sprinkle it on the forest soil surface fast enough to saturate the soil for about 10 hours at a time. This simulates a surge of salty water during a big storm.

Two people kneel in a forest taking samples. Irrigation lines are in the foreground.
Scientists work in a test plot where saltwater experiments are showing the impact of sea-level rise on coastal forests. Alice Stearns/Smithsonian Environmental Research Center

Our coastal forest showed little effect from the first 10-hour exposure to salty water in June 2022 and grew normally for the rest of the year. We increased the exposure to 20 hours in June 2023, and the forest still appeared mostly unfazed, although the tulip poplar trees were drawing water from the soil more slowly, which may be an early warning signal.

Things changed after a 30-hour exposure in June 2024. The leaves of tulip poplar in the forests started to brown in mid-August, several weeks earlier than normal. By mid-September the forest canopy was bare, as if winter had set in. These changes did not occur in a nearby plot that we treated the same way, but with freshwater rather than seawater.

The initial resilience of our forest can be explained in part by the relatively low amount of salt in the water in this estuary, where water from freshwater rivers and a salty ocean mix. Rain that fell after the experiments in 2022 and 2023 washed salts out of the soil.

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But a major drought followed the 2024 experiment, so salts lingered in the soil then. The trees’ longer exposure to salty soils after our 2024 experiment may have exceeded their ability to tolerate these conditions.

Seawater being dumped on the Southern California fires is full-strength, salty ocean water. And conditions there have been very dry, particularly compared with our East Coast forest plot.

Changes evident in the ground

Our research group is still trying to understand all the factors that limit the forest’s tolerance to salty water, and how our results apply to other ecosystems such as those in the Los Angeles area.

Tree leaves turning from green to brown well before fall was a surprise, but there were other surprises hidden in the soil below our feet.

Rainwater percolating through the soil is normally clear, but about a month after the first and only 10-hour exposure to salty water in 2022, the soil water turned brown and stayed that way for two years. The brown color comes from carbon-based compounds leached from dead plant material. It’s a process similar to making tea.

A hand with a latex glove holds a needle and tube while drawing water from the ground. The water is the color of tea.
Water drawn from the soil after one saltwater experiment is the color of tea, reflecting abundant compounds leached from dead plant material. Normally, soil water would appear clear. Alice Stearns/Smithsonian Environmental Research Center, CC BY-ND

Our lab experiments suggest that salt was causing clay and other particles to disperse and move about in the soil. Such changes in soil chemistry and structure can persist for many years.

Sea-level rise is increasing coastal exposure

While ocean water can help fight fires, there are reasons fire officials prefer freshwater sources – provided freshwater is available.

U.S. coastlines, meanwhile, are facing more extensive and frequent saltwater exposure as rising global temperatures accelerate sea-level rise that drowns forests, fields and farms, with unknown risks for coastal landscapes.

Patrick Megonigal, Associate Director of Research, Smithsonian Environmental Research Center, Smithsonian Institution

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

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Consumer Corner

How to Protect Yourself from a Smartphone Scam

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How to Protect Yourself from a Smartphone Scam

How to Protect Yourself from a Smartphone Scam

(Feature Impact) The first sign is unexpectedly losing access to your cell phone. Soon after, when you connect to Wi-Fi, the gravity of the situation sinks in: a criminal has gained access to your cell phone number and is trying to siphon money from your credit cards and bank accounts.

The scam is called SIM swapping, or SIM hijacking, and it’s a concern for law enforcement in the United States and abroad as more than 5,000 people have reported SIM swapping scams to the FBI since 2022. Older adults, caregivers and families can benefit from understanding the warning signs of SIM swapping and taking simple security steps to prevent it from happening.

How SIM swapping works

A SIM card, or its digital version known as an eSIM, helps connect a phone number to a carrier network. In a SIM swapping scam, a criminal collects basic information about their victim, such as their name, birthdate and address, to try to move the victim’s phone number to a SIM card or eSIM profile the criminal controls.

Once complete, the scammer gains access to accounts you may be logged into on your phone, such as bank accounts or credit card apps, without touching your phone or being near you.

How to protect yourself from SIM swapping scams

Preparation is the best protection against SIM swapping. Cell phone users should use strong, unique passwords for each online account – password managers are a helpful tool in creating complex and randomized passwords. Use two-factor authentication where it’s offered; this adds an extra layer of security when accessing sensitive accounts.

Next, consumers should protect personal information they share online, whether on social media or in texts or emails asking for identifying data, such as PIN numbers, birthdates or one-time security codes. Be wary of anyone pushing you to share personal information, particularly if they’re pushy with their request or make it sound urgent.

Check your mobile carrier to see if it offers SIM protection. For example, Verizon customers can toggle on a protection feature on the carrier’s website or app to lock lines on their account to help prevent SIM changes.

If you get an unprompted notification that your SIM has been changed, or otherwise suspect you’ve been targeted in a SIM swapping scam, contact your banks immediately and have them freeze your accounts, including ones the criminals may not have targeted yet. Next, work with your cell phone provider to help regain access to your mobile device. If you’re able, share as much information as possible with law enforcement so they can investigate, or at least document trends, in how often this scam occurs.

To find more advice to protect against smartphone scams, visit Verizon.com.

Photo courtesy of Shutterstock

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Supreme Court rules against trans girls participating in single‑sex sports, but leaves open larger questions of trans rights

The U.S. Supreme Court ruled on June 30, 2026, that West Virginia and Idaho did not violate the Constitution by preventing transgender students from joining female sports teams, and that states can restrict who participates on women’s and girls sports teams based on a student’s sex assigned at birth.

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People who support blocking transgender athletes from participating on school sports teams gather in front of the Supreme Court on June 30, 2026. Alex Wong/Getty Images

Marie-Amelie George, Wake Forest University

The U.S. Supreme Court ruled on June 30, 2026, that West Virginia and Idaho did not violate the Constitution by preventing transgender students from joining female sports teams, and that states can restrict who participates on women’s and girls sports teams based on a student’s sex assigned at birth.

This ruling, focused squarely on transgender students participating on single-sex sports teams, does not resolve other major questions that are important to trans rights. These issues include what bathrooms transgender or nonbinary students can use at school, as well as whether transgender individuals can update their names and gender markers on identity documents.

The court folded two related cases that address sports team participation at the middle, high school and college levels – Little v. Hecox and West Virginia v. B.P.J. – into one single decision that resolved both. The justices ruled 6-3 on the cases.

This ruling backs 25 other states that, over the past few years, have passed new laws restricting transgender students from participating on female sports teams.

Twenty-one states also have some sort of restriction on transgender and nonbinary students using school bathrooms designated by sex.

As a legal scholar and expert on LGBTQ+ rights, I believe that based on the court’s reasoning, it is likely that the conservative majority on the court would uphold states’ right to restrict school bathroom use based on sex assigned at birth. However, this ruling leaves bigger questions regarding transgender students’ broader rights in school, at work and elsewhere unanswered.

A young woman with long light brown hair stands at a podium that says 'Lamba Legal' with a blue backdrop behind her that has the same words.
Becky Pepper-Jackson, a transgender student athlete at the center of one of the Supreme Court’s June 30 opinions, speaks during the Lambda Legal Liberty Awards National Dinner on June 4, 2026, in New York City. Roy Rochlin/Getty Images for Lambda Legal

A political flash point

There were estimated to be fewer than 10 transgender athletes who participated in collegiate athletics in 2024.

But the issue of transgender students participating on sports teams is a hot-button issue for the Trump administration and Republicans, who argue that transgender female students have a biological advantage in competitive sports over athletes assigned female at birth.

The issue is nuanced and depends on factors including the athletes’ age and whether they have undergone gender-affirming hormonal therapy.

Some recent research shows that transgender female athletes who have undergone gender affirming hormone therapy have a comparable level of strength to cisgender female athletes.

What the rulings covered

At issue in these two Supreme Court cases were what protections Title IX – which bars sex-based discrimination in education programs and activities that receive federal funding – as well as the equal protection clause of the 14th Amendment gave transgender students.

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Little v. Hecox challenged Idaho’s 2020 law that allows only students whose sex was designated female at birth to participate on girls and women’s school sports team.

Lindsay Hecox, a transgender female student at Boise State University, alongside a cisgender student, filed a lawsuit against the state in 2020. Hecox, now 24, could not try out for the school’s track and cross country team because of the law. She instead ran at the club level.

In West Virginia v. B.P.J., a transgender middle school student athlete named Becky Pepper-Jackson similarly sued the state so she could continue participating in track and field. Pepper-Jackson won a state title in girls shot put in May 2026.

The state’s 2021 Save Women’s Sports Act requires public middle schools, high schools and colleges to designate all school athletic teams by biological sex.

Four young people are seen running close to one another on a track with trees behind them.
The Supreme Court’s ruling will allow states to continue barring transgender student athletes like Sadie Schreiner, left, from participating on sports teams that are designated by sex. Al Bello/Getty Images

Understanding Title IX and how it applies

The Supreme Court determined that states are permitted to restrict sports team participation under Title IX and its regulations, which explicitly permit schools to have separate male and female sports teams.

The opinion started by emphasizing there are “enduring” physical differences between males and females, and that if there were unified sports teams, females could be at a disadvantage.

“Separate sports teams for biological males and biological females are reasonable: Given the inherent physical differences between the sexes, allowing only biological females to play on women’s and girls’ teams can reduce the risk of physical injury and ensure fair competition,” the court ruled in its opinion on West Virginia v. B.P.J., authored by Justice Brett Kavanaugh. Chief Justice John Roberts and Justices Samuel Alito, Clarence Thomas, Neil Gorsuch and Amy Coney Barrett joined the ruling.

Pepper-Jackson argued that this part of Title IX did not have relevance to her case because she had taken puberty blockers and never gone through male puberty.

As a result, she argued, she did not have heightened levels of testosterone or other physical differences that could raise the concern of a competitive advantage over cis female students in sports. She also posed no physical safety concerns for her teammates.

The court’s majority rejected this argument, saying that the Title IX regulations did not speak to this issue. The court recognized that although the laws might produce unfair results for someone like Pepper-Jackson, this did not make the restrictions improper.

The court added that Pepper-Jackson and other students in her position need to take up their concerns with state legislatures.

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The court’s liberal wing – Justices Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson – agreed with the conservative majority that the laws did not violate Title IX.

The role of the equal protection clause

The court also addressed the equal protection clause of the U.S. Constitution, which says that the government must apply its laws fairly and cannot treat people differently without a valid reason.

The court’s conservative majority ruled that the laws distinguished based on sex, and as a result they scrutinized the laws more carefully. However, the court concluded that the athletic restrictions nevertheless passed constitutional muster.

Here, too, the court’s majority cited the interests of safety and competitive fairness as important justifications for the laws.

The liberal justices disagreed with their colleagues’ analysis. In their view, the laws were too broad to satisfy the Constitution, because they banned transgender girls who had never experienced male puberty from female sports teams.

A side step

The decision is a narrow one. The court went to great lengths to emphasize that it was focused on sports, and that the court was not being asked about transgender people’s rights more broadly.

In the court’s telling, sports are unique because competition depends on the physiology and physical differences between those assigned male and female at birth. That is important, because there are few circumstances in which the physical differences between males and females continue to be relevant.

In the past, many occupations and schools were sex-segregated. Today, bathrooms, school sports teams, changing facilities, some college residence halls, juvenile detention centers and prisons are among the last places that remain segregated by sex.

Moreover, the court avoided ruling on the constitutional standard that should apply when transgender people are discriminated against. Under constitutional doctrine, courts will more closely scrutinize laws that discriminate against historically powerless minority groups, such as people of color and women.

One of the open questions in transgender rights litigation is whether transgender people qualify for that more searching review.

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This case did not resolve that issue.

The court’s narrow ruling on transgender athletes ultimately did not resolve other key issues for transgender rights, which the court will likely be asked to address at a later date.

Marie-Amelie George, Associate Professor of Law, Wake Forest University

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

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Mattel Adventure Park and VAI Resort Continue to Grow, But Opening Date Remains Uncertain

Get the latest update on Mattel Adventure Park and VAI Resort in Glendale, Arizona. Construction continues in 2026, but officials have yet to announce an opening date.

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Mattel Adventure Park
Image Credit: Mattel Adventure

GLENDALE, Ariz. — One of Arizona’s most anticipated entertainment developments continues to make visible progress, but visitors eager to experience Mattel Adventure Park and VAI Resort will likely have to wait longer.

Located near State Farm Stadium in Glendale, the massive VAI Resort project and the adjacent Mattel Adventure Park have been under construction for several years. While the development has transformed the skyline west of Phoenix, recent updates indicate that neither attraction currently has a confirmed opening date.

New Reports Suggest Further Delays

Recent reports published in spring 2026 indicate that VAI Resort officials continue to maintain their policy of announcing an opening date approximately nine months before welcoming guests. Because no such announcement has been made, industry observers and local media outlets now believe a 2026 opening is becoming increasingly unlikely.

The uncertainty extends to Mattel Adventure Park, which was originally expected to open in 2022 before being delayed multiple times. After missing its latest target of late 2025, references to a specific opening date were removed from public materials. Park representatives have stated that they currently have no update regarding an opening timeline.

Construction Continues Across the Property

Despite the delays, construction remains active throughout the resort and theme park complex. Visitors traveling along Loop 101 can easily spot the towering Hot Wheels-themed roller coasters that have become some of the most recognizable structures on the site.

Drone footage and construction updates posted throughout 2026 show ongoing work on hotel towers, entertainment venues, infrastructure, and various attractions within Mattel Adventure Park.

The official VAI Resort website continues to promote its future offerings, including luxury accommodations, restaurants, entertainment venues, retail spaces, and the world’s first Mattel Adventure Park.

What Guests Can Expect

When completed, Mattel Adventure Park is expected to feature attractions inspired by some of Mattel’s most recognizable brands, including:

  • Barbie™ Beach House
  • Hot Wheels™ Bone Shaker™: The Ultimate Ride
  • Hot Wheels™ Twin Mill™ Racer
  • Thomas & Friends™ attractions
  • Masters of the Universe-themed experiences
  • Mattel Games-themed attractions and activities

The park will be Arizona’s first fully themed indoor-outdoor amusement park and is designed to offer experiences for guests of all ages.

Meanwhile, VAI Resort is planned to include four hotel towers with approximately 1,100 rooms, a large entertainment district, multiple restaurants, retail shopping, convention facilities, and a state-of-the-art amphitheater designed to host major concerts and events.

A Growing Vision

One factor contributing to the project’s lengthy timeline appears to be the continued expansion of the resort’s scope. Developers have repeatedly described VAI as a destination that has evolved far beyond its original vision, adding new hospitality, dining, entertainment, and retail components over time. Earlier project statements noted that these expansions affected scheduling for the adjacent theme park.

The development remains one of the largest tourism and hospitality projects currently underway in Arizona, with investments estimated at more than $1 billion.

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Looking Ahead

For now, both VAI Resort and Mattel Adventure Park remain works in progress. Construction activity continues, new attractions are still being promoted on official websites, and developers have shown no indication that the project has been abandoned. However, without an announced opening date, Arizona residents and visitors will need to remain patient as Glendale’s ambitious entertainment destination moves closer to completion.

While many expected to be riding Hot Wheels coasters by now, the latest updates suggest that the world’s first Mattel Adventure Park is still a destination for the future rather than the present.

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