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.

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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.

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.

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.

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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.

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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In the face of unprecedented wildfires fueled by powerful Santa Ana winds, LA Metro is taking decisive action to support our community. The transit agency has implemented critical service changes and suspended fare collection through the weekend as part of their commitment to public safety and recovery efforts.

What’s Happening?

As reported by KTLA, Metro Board Chair Janice Hahn announced the fare suspension through Friday, which has now been extended into the weekend. The decision was made due to technical difficulties with TAP machines caused by ongoing power issues, compounded by the dire needs of those affected by the wildfires scarring parts of Los Angeles County. Officials have opened fare gates at all rail stations, allowing riders to travel without the worry of fare costs during this emergency phase. Similarly, bus operators are not collecting fares, ensuring that transportation is accessible for everyone during this challenging time.

Service Adjustments and Repair Efforts

Along with fare suspensions, LA Metro is mobilizing resources to make essential repairs across the transit system, particularly focusing on areas severely affected by the fires. With over 1,000 feet of overhead wire needing urgent attention between South Pasadena and Highland Park, the agency is tapping into bus shuttles to supplement train services where necessary.

Some specific interruptions include:

• A Line: Bus shuttles are replacing train service between Southwest Museum and Fillmore stations due to damaged wires.
• Line 134: This service has been canceled entirely due to fires near the Palisades area.
• Lines 180 and 217: These buses are on detour, avoiding downed power lines and using alternate routes.
• Lines 660 and 662: Service is halted north of Washington in Pasadena and Altadena because of wildfire activities.
• Line 296: Buses will reroute to the 5 Freeway between Los Feliz Blvd. and Western Ave.
• Line 602: Another cancellation due to the Palisades area fires.

Metro is diligently working to clear debris and address the challenges posed by wildfires, indicating that repairs are expected to continue through the weekend.

Community Support and Emergency Response

Metro’s commitment extends beyond maintaining transit services. The agency has offered assistance during emergency situations, including providing buses to the LAPD for evacuating residents during the Sunset Fire in the Hollywood Hills. Chair Hahn has expressed heartfelt gratitude to first responders, acknowledging their relentless efforts to keep our community safe.

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Staying Informed

For those relying on LA Metro services during these disruptions, it’s essential to stay updated. Riders are encouraged to follow LA Metro’s social media channels or check the Metro Alerts page for the latest information on service changes and emergency updates.

In this time of uncertainty and recovery, LA Metro is demonstrating remarkable adaptability and a commitment to public safety. Their cooperation with emergency services and proactive measures ensures that our community receives the support it needs. Thank you to all the first responders and LA Metro staff working tirelessly behind the scenes—your efforts are deeply appreciated!

Let’s all stay safe, support one another, and navigate through these tough times together.

Read the KTLA article:

https://ktla.com/news/local-news/la-metro-adjusts-service-and-suspends-fares-due-to-fire-recovery-and-wind-repairs

STM Daily News is a vibrant news blog dedicated to sharing the brighter side of human experiences. Emphasizing positive, uplifting stories, the site delivers 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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Ana Lucia Araujo, Howard University

During the era of slavery in the Americas, enslaved men, women and children also enjoyed the holidays. Slave owners usually gave them bigger portions of food, gifted them alcohol and provided extra days of rest.

Those gestures, however, were not made out of generosity.

As abolitionist, orator and diplomat Frederick Douglass explained, slave owners were trying to keep enslaved people under control by plying them with better meals and more downtime, in the hopes of preventing escapes and rebellions.

Most of the time, it worked.

But as I discuss in my recent book, “Humans in Shackles: An Atlantic History of Slavery,” many enslaved people were onto their owners and used this brief period of respite to plan escapes and start revolts.

Feasting, frolicking and fiddling

Most enslaved people in the Americas adhered to the Christian calendar – and celebrated Christmas – since either Catholicism or Protestantism predominated, from Birmingham, Alabama, to Brazil.

Consider the example of Solomon Northup, whose tragic story became widely known in the film “12 Years A Slave.” Northup was born free in the state of New York but was kidnapped and sold into slavery in Louisiana in 1841.

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In his narrative, Northup explained that his owner and their neighbors gave their slaves between three and six days off during the holidays. He described this period as “carnival season with the children of bondage,” a time for “feasting, frolicking, and fiddling.”

According to Northup, each year a slave owner in central Louisiana’s Bayou Boeuf offered a Christmas dinner attended by as many as 500 enslaved people from neighboring plantations. After spending the entire year consuming meager meals, this marked a rare opportunity to indulge in several kinds of meats, vegetables, fruits, pies and tarts.

There’s evidence of holiday celebrations since the early days of slavery in the Americas. In the British colony of Jamaica, a Christmas masquerade called Jonkonnu has taken place since the 17th century. One 19th-century artist depicted the celebration, painting four enslaved men playing musical instruments, including a container covered with animal skin, along with an instrument made from an animal’s jawbone.

In the 1861 narrative of her life in slavery, abolitionist Harriet Jacobs described a similar masquerade in North Carolina.

“Every child rises early on Christmas morning to see the Johnkannaus,” she wrote. “Without them, Christmas would be shorn of its greatest attraction.”

On Christmas Day, she continued, nearly 100 enslaved men paraded through the plantation wearing colorful costumes with cows’ tails fastened to their backs and horns decorating their heads. They went door to door, asking for donations to buy food, drinks and gifts. They sang, danced and played musical instruments they had fashioned themselves – drums made of sheepskin, metal triangles and an instrument fashioned from the jawbone of a horse, mule or donkey.

It’s the most wonderful time to escape

Yet beneath the revelry, there was an undercurrent of angst during the holidays for enslaved men, women and children.

In the American South, enslavers often sold or hired out their slaves in the first days of the year to pay their debts. During the week between Christmas and New Year’s Day, many enslaved men, women and children were consumed with worry over the possibility of being separated from their loved ones.

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At the same time, slave owners and their overseers were often distracted – if not drunk – during the holidays. It was a prime opportunity to plan an escape.

John Andrew Jackson was owned by a Quaker family of planters in South Carolina. After being separated from his wife and child, he planned to escape during the Christmas holiday of 1846. He managed to flee to Charleston. From there, he went north and eventually reached New Brunswick in Canada. Sadly, he was never able to reunite with his enslaved relatives.

Even Harriet Tubman took advantage of the holiday respite. Five years after she successfully escaped from the Maryland plantation where she was enslaved, she returned on Christmas Day in 1854 to save her three brothers from a life of bondage.

‘Tis the season for rebellion

Across the Americas, the holiday break also offered a good opportunity to plot rebellions.

In 1811, enslaved and free people of color planned a series of revolts in Cuba, in what became known as the Aponte Rebellion. The scheming and preparations took place between Christmas Day and the Day of Kings, a Jan. 6 Catholic holiday commemorating the three magi who visited the infant Jesus. Inspired by the Haitian Revolution, free people of color and enslaved people joined forces to try to end slavery on the island.

In April, the Cuban government eventually smashed the rebellion.

In Jamaica, enslaved people followed suit. Samuel Sharpe, an enslaved Baptist lay deacon, called a general strike on Christmas Day 1831 to demand wages and better working conditions for the enslaved population.

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Two nights later, a group of enslaved people set fire to a trash house at an estate in Montego Bay. The fire spread, and what was supposed to be a strike instead snowballed into a violent insurrection. The Christmas Rebellion – or Baptist War, as it became known – was the largest slave revolt in Jamaica’s history. For nearly two months, thousands of slaves battled British forces until they were eventually subdued. Sharpe was hanged in Montego Bay on May 23, 1832.

After news of the Christmas Rebellion and its violent repression reached Britain, antislavery activists ramped up their calls to ban slavery. The following year, Parliament passed the Slavery Abolition Act, which prohibited slavery in the British Empire.

Yes, the week between Christmas Day and New Year’s Day offered a chance to feast or plot rebellions.

But more importantly, it served as a rare window of opportunity for enslaved men, women and children to reclaim their humanity.

Ana Lucia Araujo, Professor of History, Howard University

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

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