Grade 12 Chemistry

Please review each article prior to use: grade-level applicability and curricular alignment might not be obvious from the headline alone.

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Some Japanese snack packages are turning black-and-white as Iran war depletes ink supply

Yuri Kageyama, The Associated Press 3 minute read Preview
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Some Japanese snack packages are turning black-and-white as Iran war depletes ink supply

Yuri Kageyama, The Associated Press 3 minute read Updated: Yesterday at 2:25 PM CDT

TOKYO (AP) — The packaging on some snacks in Japan is turning a somber black-and-white, as the war in Iran disrupts the supply of an ingredient used in colored ink.

Tokyo-based Calbee Inc., which makes potato chips and cereal, said what’s inside remains the same. Calbee's popular snacks are available in Japan's ubiquitous convenience stores and shipped to the United States, China and Australia.

“This measure is intended to help maintain a stable supply of products,” it said in a statement this week.

The change on 14 products in its lineup will start May 25, limiting ink colors to just two, the company said, noting it was necessary to respond flexibly to changing geopolitical conditions.

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Updated: Yesterday at 2:25 PM CDT
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Chemical leak at a West Virginia plant kills 2 people and sends 30 more to hospitals, officials say

John Raby, The Associated Press 4 minute read Preview
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Chemical leak at a West Virginia plant kills 2 people and sends 30 more to hospitals, officials say

John Raby, The Associated Press 4 minute read Thursday, May. 14, 2026

INSTITUTE, W.Va. (AP) — A chemical leak at a West Virginia silver recovery business on Wednesday killed two people and sent about 30 others to hospitals, including one in serious condition, authorities said.

The leak occurred at the Catalyst Refiners plant in Institute as workers were preparing to shut down at least part of the facility, Kanawha County Commission Emergency Management Director C.W. Sigman said.

A chemical gas reaction occurred at the plant involving nitric acid and another substance, Sigman said at a news briefing. He added that there was "a violent reaction of the chemicals and it instantaneously overreacted.”

“Starting or ending a chemical reaction are the most dangerous times,” Sigman said.

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Thursday, May. 14, 2026
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B.C. ‘chemical fingerprint’ scheme to track illicit drugs is likened to DNA tests

Marissa Birnie, The Canadian Press 4 minute read Preview
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B.C. ‘chemical fingerprint’ scheme to track illicit drugs is likened to DNA tests

Marissa Birnie, The Canadian Press 4 minute read Saturday, May. 9, 2026

VANCOUVER - Tucked in the basement of the chemistry building at the University of British Columbia, an arm-sized robot carries out the repetitive task of collecting and weighing colourful vials as machinery whirrs in the background.

It's part of a unique blend of robotics, chemistry and artificial intelligence aimed at helping police and health officials trace the path of batches of illicit drugs.

Police hope the "chemical fingerprinting" program is a game-changer in B.C.'s battle against toxic illicit drugs, with one senior officer likening it to DNA testing.

The provincially funded program will use technology developed at UBC by Aidos Innovations that looks at the chemical makeup of drugs and calculates their method of production, which police say could help them learn how drugs move over time.

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Saturday, May. 9, 2026
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Meet neffy: Health Canada approves epinephrine nasal spray for anaphylaxis

Nicole Thompson, The Canadian Press 3 minute read Preview
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Meet neffy: Health Canada approves epinephrine nasal spray for anaphylaxis

Nicole Thompson, The Canadian Press 3 minute read Thursday, May. 7, 2026

TORONTO - Health Canada has approved the first needle-free epinephrine treatment for severe allergic reactions: a nasal spray called neffy.

ALK Canada, which purchased the rights to distribute the drug, says the two-milligram treatment could be on the market as soon as this summer.

The drug was approved for adults and pediatric patients who weigh at least 30 kilograms, which is roughly 66 pounds. A one-milligram dose has been approved in the United States for kids between 15 and 30 kilograms, but not in Canada.

As it stands, epinephrine auto-injectors — a single-use pre-filled device known by the brand name EpiPen — are the only emergency treatment option available for allergic reactions.

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Thursday, May. 7, 2026
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EPA may ease regulation of chemical plastic recycling, and environmentalists worry

Jennifer Mcdermott, The Associated Press 7 minute read Preview
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EPA may ease regulation of chemical plastic recycling, and environmentalists worry

Jennifer Mcdermott, The Associated Press 7 minute read Saturday, May. 9, 2026

The Environmental Protection Agency is reconsidering whether facilities that recycle plastic chemically should be held to the same strict air pollution standards as incinerators.

The possible change is alarming environmental advocates who say it would lead to more dangerous pollution spewing into communities, with fewer or no checks at the federal level. The plastics industry disputes that, saying it would clear up confusion while still controlling emissions.

The world is pumping millions of tons of plastic pollution into the environment every year. While dozens of countries and many environmental groups have urged caps on production, industry and several big oil-producing countries have resisted, arguing instead for improvements in reuse and recycling.

Chemical recycling uses heat or chemicals to break down plastics. The main method, a process known as pyrolysis, has long been regulated as incineration by the Clean Air Act. The EPA limits emissions from incinerators of nine air pollutants, including toxic particulates, heavy metals and dioxins.

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Saturday, May. 9, 2026
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Manitoba enterprise at forefront in bolstering soil structure

Colleen Zacharias 7 minute read Preview
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Manitoba enterprise at forefront in bolstering soil structure

Colleen Zacharias 7 minute read Saturday, Jan. 17, 2026

Soil health has always been important to anyone who wants to grow plants that flourish but never more so than today. Soil degradation due to drought and extreme weather is a global problem that has a direct link to agricultural productivity and food security.

The status of soil health in Canada is not a concern limited to farmers and backyard gardeners. Scientists, policy makers and researchers are recommending urgent action to protect soils to safeguard the future of our food production.

In June 2024, following an 18-month study of soil conditions in Canada, the Standing Senate Committee on Agriculture and Forestry released the report Critical Ground: Why Soil is Essential to Canada’s Economic, Environmental, Human and Social Health. The report, which is based on testimony from more than 150 experts, concluded that soil in our country is at risk, with implications for food production, climate resilience and biodiversity.

Dale Overton takes soil health and its implications for fertility and food production seriously. His company, Overton Environmental Enterprises, manufactures several microbial products for large-scale agriculture as well as for the home gardener. Overton is deeply interested in regenerative farming practices and how biological amendments can benefit soil health, carbon sequestration and soil microbiomes, and boost growth rates and crop yields.

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Saturday, Jan. 17, 2026
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Rare red auroras dazzle as part of Manitoba light show

Nicole Buffie 3 minute read Preview
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Rare red auroras dazzle as part of Manitoba light show

Nicole Buffie 3 minute read Thursday, Nov. 13, 2025

Solar storm chasers, rejoice: 2025 was an excellent year for aurora borealis, and the remainder of the year could be just as active.

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Thursday, Nov. 13, 2025
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Wildfires and the new normal

Tom Law 5 minute read Tuesday, Sep. 23, 2025

Wildfires like this aren’t normal. Stop trying to normalize them.

“Bring a pair of pants and a sweater to Clear Lake — it’s unseasonably cool because of the wildfires.” That was just one of those meteorological idiosyncrasies, attempting to reach back deep into long-forgotten geography lessons, that may seem obvious to those on the Prairies. But for the outsider, a visitor from Toronto, and indeed a relative newcomer to Canada, it was certainly a shock, and a stark reminder that I would be flying into a province still under a state of emergency, which had until recently been decimated by wildfires. It was also an introduction into what may be considered ‘normal’.

Visiting Manitoba this August was extraordinary — the people most certainly lived up to the “friendly” billing that adorns the licence plates, and the scenery of Riding Mountain National Park was worth the trip alone. However, there were a number of topics of conversation that made me question what I had come to know as accepted wisdom.

Talk about fishing restrictions, Indigenous rights, oil and gas permeated discussions, with healthy, good spirited debates. But for me, the most vexing issue was wildfires. More specifically, the extent of their aftermath, effects, and associated restrictions, have become normalized.

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Researchers solve decades-old color mystery in iconic Jackson Pollock painting

Adithi Ramakrishnan, The Associated Press 3 minute read Preview
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Researchers solve decades-old color mystery in iconic Jackson Pollock painting

Adithi Ramakrishnan, The Associated Press 3 minute read Friday, Oct. 10, 2025

NEW YORK (AP) — Scientists have identified the origins of the blue color in one of Jackson Pollock's paintings with a little help from chemistry, confirming for the first time that the abstract expressionist used a vibrant, synthetic pigment known as manganese blue.

“Number 1A, 1948,” showcases Pollock's classic style: paint has been dripped and splattered across the canvas, creating a vivid, multicolored work. Pollock even gave the piece a personal touch, adding his handprints near the top.

The painting, currently on display at the Museum of Modern Art in New York, is almost 9 feet (2.7 meters) wide. Scientists had previously characterized the reds and yellows splattered across the canvas, but the source of the rich turquoise blue proved elusive.

In a new study, researchers took scrapings of the blue paint and used lasers to scatter light and measure how the paint's molecules vibrated. That gave them a unique chemical fingerprint for the color, which they pinpointed as manganese blue.

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Friday, Oct. 10, 2025
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Residents pour cold water on proposed development in St. Vital

Joyanne Pursaga 5 minute read Preview
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Residents pour cold water on proposed development in St. Vital

Joyanne Pursaga 5 minute read Friday, Sep. 12, 2025

Some south St. Vital residents hope to stop a development proposal to build 23 new homes over fears the construction would put their well water at risk.

The proposal aims to add the homes at 45 Daman Farm Rd., 100 Jean Louis Rd. and 2974 St. Mary’s Rd., a 57-acre property on the west side of St. Mary’s Road in the St. Vital Perimeter South neighbourhood. The area is located within city limits but does not have city water and sewer service.

“This particular property lies in a sensitive groundwater area and every well that’s drilled in this area just contaminates the water even further by adding more salt,” said Michelle Olivson, who lives in the area.

City staff recommended the housing application be rejected over the groundwater concerns but city council’s property and development committee voted in favour of the project Friday, echoing a previous community committee vote.

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Friday, Sep. 12, 2025
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Green chemist and musician on fighting climate change

Janine LeGal 6 minute read Preview
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Green chemist and musician on fighting climate change

Janine LeGal 6 minute read Saturday, Jul. 19, 2025

There’s no shortage of doom and gloom associated with the words “climate change” these days. As a result, many people are stressed out and feeling helpless.

Particularly concerning is that, more than ever, younger people are experiencing considerable distress with environmental anxiety, also known as eco-anxiety or climate anxiety. The Journal of Mental Health and Climate Change, an open-access publication that features interdisciplinary scientific research on mental health and climate change, continues to write extensively on this subject.

While prominent environmental activists, including well-known science broadcaster David Suzuki, paint a bleak picture of the future, many other professionals in various fields are working tirelessly to educate, inspire and fight the good fight for the next generations.

Born and raised in Lynn Lake, Man., Devin Latimer is one of those professionals. The faculty member in chemistry at the University of Winnipeg is also a long-time musician, bass player with local band Leaf Rapids and the Juno award-winning Nathan Music Co.

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Saturday, Jul. 19, 2025
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Getting river rehab rolling: Other cities' success in stemming effluent offer splashes of hope for Winnipeg's waterways

Julia-Simone Rutgers 16 minute read Preview
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Getting river rehab rolling: Other cities' success in stemming effluent offer splashes of hope for Winnipeg's waterways

Julia-Simone Rutgers 16 minute read Friday, May. 23, 2025

From giant cisterns to rain gardens, storage tunnels and parks, cities across Canada — and the rest of the world — have shown there are plenty of options to stop the overflow of sewage into freshwater.

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Friday, May. 23, 2025
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Shoal Lake 40 toasts clean water

Melissa Martin 6 minute read Preview
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Shoal Lake 40 toasts clean water

Melissa Martin 6 minute read Wednesday, Sep. 15, 2021

SHOAL LAKE 40 FIRST NATION – As he raised his glass, Chief Vernon Redsky looked at the water and a memory came rushing back. It reminded him of when he was a kid, he said, and the water in Shoal Lake was crystal-clear like that, back when he and his friends would splash along the shore, drinking from the lake when they got thirsty.

So he thought about that as he clinked his glass against two others, and took a sip. A toast, to the first officially safe tap drinking water in Shoal Lake 40: on Wednesday, after 24 years, the Treaty Three First Nation’s boil water advisory officially ended.

“It’s surreal to be at this moment,” Redsky said at a ceremony to celebrate the achievement, as well as the opening of the community’s new school.

One day earlier, a government official in Kenora, Ont., had officially approved the latest test results from Shoal Lake 40’s new water treatment plant, which started pumping this summer. That night, Redsky couldn’t sleep; he called a former chief to talk about the long road they had travelled to get to this point.

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Wednesday, Sep. 15, 2021

School science changes spark concerns

Maggie Macintosh 6 minute read Preview

School science changes spark concerns

Maggie Macintosh 6 minute read Wednesday, May. 27, 2026

Calls for more teacher training, consultation and updating Manitoba’s overhauled science curriculum are growing ahead of a mandatory rollout planned for the fall.

The Education Department is in the process of adjusting what scientific concepts students must learn and experiment with between kindergarten and Grade 10.

The new curriculum calls on teachers to regularly integrate Indigenous perspectives into their lessons and focus on building scientific literacy while leaving a lot up to professional discretion.

A pair of local researchers who’ve been surveying pilot participants have found “mixed responses.”

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Wednesday, May. 27, 2026

Seeding clock ticks loudly on Prairie fields

Laura Rance-Unger 4 minute read Preview

Seeding clock ticks loudly on Prairie fields

Laura Rance-Unger 4 minute read Saturday, May. 2, 2026

If the forecast holds, Manitoba fields will be crawling with equipment this week, as the race to seed this year’s crop begins.

An early-May start to seeding is right on track by historical standards, but still feels late this year, partly because it’s been so cold. Seeding dates have been edging earlier over time, especially for crops such as wheat, as farmers discover they can get away with super-early seeding under the right circumstances.

Due to the compressed growing season characteristic to this part of the world, it’s well-documented the later the crop is seeded, the lower it yields. However, seed too early and there’s a risk that a late-spring frost will force farmers to reseed some fields.

For most, it’s a gamble worth taking.

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Saturday, May. 2, 2026
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Gatorade, inventor of the sports drink, is getting a rebrand targeting non-athletes

Dee-ann Durbin, The Associated Press 5 minute read Preview
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Gatorade, inventor of the sports drink, is getting a rebrand targeting non-athletes

Dee-ann Durbin, The Associated Press 5 minute read Thursday, May. 7, 2026

Sixty years after it invented sports drinks, Gatorade is making a surprising pivot: It’s no longer focusing primarily on athletes.

PepsiCo, Gatorade’s parent company, said Thursday that the brand wants to broaden its reach to non-athletes who are looking for ways to hydrate, whether they’re on a long flight, going for a walk or nursing a hangover. New packaging highlights the specific ways Gatorade’s various drinks and powders work and the research behind them.

The change reflects U.S. consumers’ booming interest in beverages with perceived health benefits. Jack Doggett, a food and drink analyst with the consulting firm Mintel, said his research indicates 60% of consumers who buy sports drinks aren’t athletes but want the functional ingredients those drinks provide, like electrolytes for hydration and carbohydrates for energy.

“People are using these drinks more for wellness and daily maintenance,” Doggett said. “It’s easy to say that the wellness consumer is the young consumer, but older generations are also drinking these drinks for hydration.”

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Thursday, May. 7, 2026

Data centres and infrastructure: an expensive pairing

Editorial 4 minute read Preview

Data centres and infrastructure: an expensive pairing

Editorial 4 minute read Friday, Feb. 20, 2026

Governments around the world — India being the latest — have been falling over themselves trying to lure power-hungry, water-thirsty data centre operations to build in their backyards.

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Friday, Feb. 20, 2026
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U of M chemist earns award for work on new drug candidate for treating Lou Gehrig’s disease

Conrad Sweatman 3 minute read Preview
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U of M chemist earns award for work on new drug candidate for treating Lou Gehrig’s disease

Conrad Sweatman 3 minute read Monday, Nov. 17, 2025

A University of Manitoba PhD candidate with a dramatic life story has been awarded the Mitacs Innovation Award for co-inventing an aspiring new drug candidate for treating amyotrophic lateral sclerosis (ALS), better known as Lou Gehrig’s disease, announced Monday.

“I thought, like, it’s a spam call. Then someone told me that, ‘You have been selected for the (award),’ so I was numb for 10 to 20 seconds,” says medicinal chemist Nitesh Sanghai, currently pursuing a doctorate at the U of M’s college of pharmacy under the supervision of Prof. Geoffrey K. Tranmer.

Sanghai doesn’t talk about “rags to riches” but instead “grass to grace” in describing his trajectory. The 43-year-old from Jharia, a small town in the Jharkhand district of India, says he was the first person in his family to pass India’s Grade 10 board examination, a gateway to further secondary and post-secondary education.

“I thought of breaking the cycle and pursuing studies with passion and privilege, which my family never had,” he says.

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Monday, Nov. 17, 2025

In the cool of a Portugal night, it’s time to pick the grapes

Filipe Bento, Ana Brigida And Suman Naishadham, The Associated Press 4 minute read Preview

In the cool of a Portugal night, it’s time to pick the grapes

Filipe Bento, Ana Brigida And Suman Naishadham, The Associated Press 4 minute read Monday, Oct. 6, 2025

VIMIEIRO, Portugal (AP) — Under a moonlit sky and the glow of headlamps, workers gingerly pluck grape clusters while much of Portugal sleeps.

They harvest in the Alentejo region, sometimes called the “Tuscany of Portugal” for its rolling vineyards, olive groves and forests that supply cork for the wines. In this vineyard about a 90-minute drive east of Lisbon, the cool autumn night carries the smell of ripe fruit. The workers' laughter blends with the sound of rustling leaves.

The night harvest is a time-honored practice in viticulture, meant to preserve the freshness of grapes and shield them from the adverse effects of daytime heat, sunlight and oxidation. As summers in Portugal grow longer, hotter and more unpredictable — in part due to climate change — the practice has become more common here.

Bárbara Monteiro, co-owner and manager of the Herdade Da Fonte Santa vineyard said she struggled at first to convince her harvesters to work at night — midnight to 8 a.m. They began doing so in 2019.

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Monday, Oct. 6, 2025

New study adds to the possibility of favorable conditions for life at Saturn’s moon Enceladus

Marcia Dunn, The Associated Press 4 minute read Preview

New study adds to the possibility of favorable conditions for life at Saturn’s moon Enceladus

Marcia Dunn, The Associated Press 4 minute read Monday, Oct. 6, 2025

CAPE CANAVERAL, Fla. (AP) — Scientists have uncovered new types of organics in icy geysers spouting from Saturn’s moon Enceladus, bolstering the likelihood that the ocean world may harbor conditions suitable for life.

Their findings, reported Wednesday, are based on observations made by NASA’s Cassini spacecraft in 2008 during a close and fast flyby of Enceladus. The small moon, one of 274 orbiting Saturn, has long been considered a prime candidate in the search for life beyond Earth because of its hidden ocean and plumes of water erupting from cracks near its south pole.

While Enceladus may be habitable, no one is suggesting that life exists.

“Being habitable and being inhabited are two very different things. We believe that Enceladus is habitable, but we do not know if life is indeed present," said the University of Washington's Fabian Klenner, who took part in the study.

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Monday, Oct. 6, 2025

Study estimates 2023 Canadian wildfire smoke caused 82,000 premature deaths globally

Brenna Owen, The Canadian Press 5 minute read Preview

Study estimates 2023 Canadian wildfire smoke caused 82,000 premature deaths globally

Brenna Owen, The Canadian Press 5 minute read Monday, Oct. 6, 2025

VANCOUVER - Smoke from record-breaking Canadian wildfires in 2023 caused an estimated 5,400 acute deaths and about 82,100 premature deaths worldwide, a new study shows.

The study published in the peer-reviewed journal Nature acknowledges some variation in mortality estimates depending on the methods used, but says its overall conclusion is the smoke led to an "enormous and far-reaching" health burden.

Canadian co-author Michael Brauer says the findings serve as a "wake-up call" for areas that haven't typically seen repeated or prolonged exposure to wildfire smoke.

The health impacts will only increase with worsening climate change, he says, and understanding them is crucial for managing the risk and protecting people.

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Monday, Oct. 6, 2025

Takeaways from a hunt for ‘secret’ fresh water under the North Atlantic seabed

Calvin Woodward, Carolyn Kaster And Rodrique Ngowi, The Associated Press 5 minute read Preview

Takeaways from a hunt for ‘secret’ fresh water under the North Atlantic seabed

Calvin Woodward, Carolyn Kaster And Rodrique Ngowi, The Associated Press 5 minute read Monday, Oct. 6, 2025

ABOARD LIFTBOAT ROBERT, North Atlantic (AP) — It turns out the Continental Shelf has been holding a secret from the ages. Beneath the sea floor off the U.S. northeast lies an enormous reserve of fresh water whose existence was long unknown, then was suspected and now is confirmed.

The first global expedition to drill systematically for undersea fresh water has come away with thousands of samples of it. And this comes as rising sea levels and other harms from a warming climate threaten freshwater supplies on land.

Expedition 501, a $25 million collaboration of more than a dozen countries including the U.S., drilled 20 to 30 miles (30 to 50 kilometers) off the coast into what is now believed to be a freshwater reserve stretching from New Jersey to Maine. It's just one of many prospective depositories of fresh water hiding under shallow salt waters around the world that might some day be tapped to slake the planet’s intensifying thirst.

Associated Press journalists visited the drilling platform last month, some seven hours out to sea by supply boat from Fall River, Massachusetts, to view the operation. Here are some takeaways:

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Monday, Oct. 6, 2025

Scientists tap ‘secret’ fresh water under the ocean, raising hopes for a thirsty world

Calvin Woodward, Carolyn Kaster And Rodrique Ngowi, The Associated Press 10 minute read Preview

Scientists tap ‘secret’ fresh water under the ocean, raising hopes for a thirsty world

Calvin Woodward, Carolyn Kaster And Rodrique Ngowi, The Associated Press 10 minute read Monday, Oct. 6, 2025

ABOARD LIFTBOAT ROBERT, North Atlantic (AP) — Deep in Earth's past, an icy landscape became a seascape as the ice melted and the oceans rose off what is now the northeastern United States. Nearly 50 years ago, a U.S. government ship searching for minerals and hydrocarbons in the area drilled into the seafloor to see what it could find.

It found, of all things, drops to drink under the briny deeps — fresh water.

This summer, a first-of-its-kind global research expedition followed up on that surprise. Drilling for fresh water under the salt water off Cape Cod, Expedition 501 extracted thousands of samples from what is now thought to be a massive, hidden aquifer stretching from New Jersey as far north as Maine.

It's just one of many depositories of “secret fresh water” known to exist in shallow salt waters around the world that might some day be tapped to slake the planet’s intensifying thirst, said Brandon Dugan, the expedition's co-chief scientist.

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Monday, Oct. 6, 2025