Thursday, October 17, 2024

Canada must act now to be prepared for the next health emergency, new pandemic report warns

A future pandemic could be swifter and more severe than COVID-19, experts say in independent report

A woman in full PPE leans over a patient on a ventilator.
A nurse in full PPE leans over a COVID-19 patient on a ventilator in January 2022. A new report from an independent group of experts outlines how Canada can better prepare for future pandemics. (Evan Mitsui/CBC)

Canada needs to learn from the COVID-19 pandemic and take action before the next health emergency strikes, an expert panel of doctors and researchers say in a new independent report.

"Most scientists feel that it's only a matter of time before we face something similar to what we went through these past five years," said Dr. Fahad Razak, one of the six experts who contributed to the report examining how scientific advice was developed and how research was co-ordinated.

"A lot of what we saw globally when we compared [pandemic] responses suggests that the preparedness is the critical part."

The panel's report, called "The Time to Act is Now," says disease surveillance, hospitalization data and research findings need to be communicated much more effectively between the provinces, the territories and the federal government.

"The fragmented nature of how we govern this country, with separate decisions being made in provinces and territories and what's being done at the federal government [level], had really significant impact on how we responded to the pandemic," said Razak, an internal medicine specialist at St. Michael's Hospital in Toronto who was the scientific director of the Ontario COVID-19 Science Advisory Table.

WATCH | National inquiry into COVID failures needed, experts say:

Canada needs a national inquiry into COVID failures, experts say

1 year ago
Duration2:42
A series of new reports in the British Medical Journal say Canada was 'ill-prepared' and 'lacked co-ordination' in the COVID-19 pandemic. The report authors say it is time to investigate what happened and learn how to prepare for the next pandemic.

The availability of health data varied across the country during the pandemic, making it "very difficult for us to get a national picture of what was happening," he said in an interview on Tuesday. 

The report also says Canada needs to create a single, permanent scientific advisory group — something that's been done in the U.K. — instead of trying to pull together that expertise in the middle of an epidemic.

"There's only so much that you can do in the middle of a crisis. People are desperate, infrastructure does not work as well when there's a crisis," Razak said.

The report says the "absence of pre-existing emergency protocols for science advice in Canada caused significant delays" and better co-ordination was needed "within and across all levels of government."

Having scientific advisory groups federally and provincially communicating separately "resulted in multiple streams of advice," said the report, which was released by the agency on Thursday. It had been requested by Health Canada last August.

The report also recommended that evolving health information should be shared much more quickly with the public.

WATCH | Will Canadians get updated COVID vaccines this year? 

Updated COVID-19 vaccines roll out — but will Canadians roll up their sleeves?

12 days ago
Duration1:58
Updated COVID-19 vaccines are rolling out across the country, with priority access for people over 65 and those with underlying medical conditions, but convincing Canadians to roll up their sleeves yet again could be a challenge.

"I think the pandemic was a perfect example of if you don't publicly release that information, it breeds mistrust and disinformation," said Razak.

"[The scientific advisory group's] communication to government should be released to the public almost as quickly as you generate it," he said.

"You want the public to be confident that they are also being provided with the best available scientific evidence."

Report highlights role of inequities

The report says Canada also needs to address inequities among people who are hardest hit during emergencies, including people who are racialized, Indigenous people, people who are living in poverty, people experiencing homelessness and residents of long-term care homes.

"Greater focus and investment is needed to support transdisciplinary research to identify the best ways to implement public health and other interventions to tackle well-documented inequalities," it says.

That includes more funding for Indigenous-led research, the report says.

Dr. Shannon McDonald, another expert on the panel, said funding agencies should support different types of Indigenous-led studies, including research examining how factors such as colonization, experiences of trauma and economic situations affect underlying health that could in turn affect people's risk of being disproportionately affected by emergencies.

Better data sharing between governments and First Nations, Métis and Inuit communities is also important, said McDonald, who is Métis/Anishinaabe and the former chief medical officer at the First Nations Health Authority in B.C., in an interview on Wednesday.

That requires long-term partnerships, she said.

"When we start talking about meaningfully engaging [with] Indigenous peoples, it cannot be in the ad hoc way that the gazillion committees were formed when COVID was declared as a public health emergency globally," McDonald said.

"It really is about the relationship developing over time and supporting health data strategies and advancement."

A hand with a purple glove holding a jar of dirty water to the light against a blue sky
Some provinces, including Ontario, have made significant cuts to their wastewater surveillance programs. (Mac Lai/Schulich School of Medicine & Dentistry)

Despite the shortcomings, Razak said there were many aspects of Canada's handling of the COVID-19 pandemic to be proud of, including using wastewater surveillance to detect how much of the virus was present in communities.

"We were one of the pioneering countries and we certainly advanced it at scale beyond what many other countries were able to achieve," he said.

But some provinces, including Ontario, have now made significant cuts to their wastewater surveillance programs, leaving many communities with "almost no data," Razak said.   


Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

Australian Human Rights Commission calls for national anti-racism framework

Australians report experiencing systemic racial discrimination at health services, schools, and work. 

By Alex Mitchell in Sydney
AAP·
16 Oct, 2024 

Heartbreaking accounts have convinced the human rights watchdog that racism is entrenched in the Australian community, with a society-wide response needed to stop the marginalisation.

Systemic experiences of racial discrimination at health services, schools, workplaces, and when interacting with police, have led the Australian Human Rights Commission to double down on calls for a national anti-racism framework.

Respondents reported feeling that their cultural background affected the quality of healthcare they received from professionals, while others said they felt unsafe at school because of teachers discriminating.

Racism was prevalent regardless of age, sexuality, faith, disability or cultural background, the commission found.

Race Discrimination Commissioner Giridharan Sivaraman said the first-hand accounts revealed racism in Australia was “ubiquitous, insidious, and profoundly damaging”.

“The racism described is more than hurtful words being said to someone … it is systemic, often involving dealings with some level of authority, whose power determines access to opportunities, basic needs, services, or justice,” he said.

“Racism seeps into almost every aspect of people’s lives, and in ways that have become so normalised that victims don’t feel they can talk about it … everyday racism is hidden in plain sight.”

The Federation of Ethnic Communities Councils of Australia consulted 860 participants for the report, commissioned by the Australian Human Rights Commission.

One respondent said they received one in 10 job interview opportunities before they changed their name when getting married, after which they received 10 out of 10 interviews.

Another said they were often suspected of stealing at the chemist, denying them the chance to access essential medicine.

The report’s 11 recommendations included the Government committing to a whole-of-society anti-racism agenda, with public and private institutions urged to have discrimination policies in place including preventative and redress mechanisms.

Council chairman Carlo Carli said a national anti-racism framework could “dismantle” the entrenched problems.

“The courage of those who shared their stories should compel all of us to confront and address the systemic nature of racism in Australia,” he said.

Both governments and the media fostered a culture of silence when they ignored or minimised racism, the commission said.

The report will influence the framework the commission is due to hand to the Government on November 26.

 

The meaning behind Israel's right to defend itself.

An Israeli tank moves a long the border as seen during an IDF embedded media tour to Southern Lebanon on October 13, 2024 near Naqoura, Lebanon.

Amir Levy/Getty Images

"Israel has a right to defend itself and its people." It's a phrase that's been spoken by Israel's allies – and American presidents – for decades, especially in the days after Israel launched its war in Gaza after the October 7th attack by Hamas.

But what do those words actually mean in a historically, politically and in the midst of Israel's incursions into Gaza and Lebanon.

For sponsor-free episodes of Consider This, sign up for Consider This+ via Apple Podcasts or at plus.npr.org.

No, Trump Is Not The ‘Father Of IVF’

 
NORTH LAS VEGAS, NEVADA - OCTOBER 12: Republican presidential nominee and former U.S. President Donald Trump smiles during a Hispanic roundtable at Beauty Society on October 12, 2024 in North Las Vegas, Nevada. 


By Nicole Lafond
October 16, 2024 .
This is your TPM evening briefing.

Papa fertilization really stepped in it Wednesday when trying to convince a group of women that his supposed ardent support for in-vitro fertilization is a genuine, long-held political position — and not a bandwagon he hopped on when it became a convenient middle ground for damage control on his abortion record this campaign cycle.

During a town hall event hosted and moderated by Fox News’ Harris Faulkner in the battleground state of Georgia on Tuesday, Donald Trump faced questions from an all-female audience, which reportedly consisted of women associated with local Republican groups, hand-picked by Fox News. Despite the friendly audience, Trump fumbled around as he answered their questions in weird and sexists ways — at one point painting himself as the “father of IVF” while admitting he just learned what the procedure was this year when the “fantastically attractive” Sen. Katie Britt (R-AL) explained it to him.

Here’s what the former president said in response to a question about his support for the procedure:


[Britt] called me up like, “Emergency! Emergency!” Because an Alabama judge had ruled that the IVF clinics were illegal and they have to be closed down. A judge ruled. And she said, “Friends of mine came up to me, and they were — oh, they were so angry!”

I didn’t even know they were going, you know, they were — it’s fertilization. I didn’t know they were even involved in, nobody talks about — they don’t talk about it. But now that they can’t do it — she said, “I was attacked. In a certain way, I was attacked.”

And I said, “Explain IVF very quickly.” And within about two minutes, I understood it. I said, “No, no. We’re totally in favor of IVF.”

Trump introduced his new moniker for himself in response to a question about restrictive abortion bans in red states and how the bans might impact access to the popular and commonly used fertility treatment.

“I want to talk about IVF. I’m the father of IVF!” he exclaimed, before assuring audience members that the extreme bans that have been passed in states across the nation in the wake of Roe’s overturning — a legacy that he picks and chooses when to take credit for — are “going to be redone.”

“It’s going to be redone, it’s going to be redone, they’re going to — you end up with the vote of the people. And some of them, I agree, they’re too tough, too tough. And those are going to be redone,” he said.

“We really are the party for IVF. We want fertilization and it is all the way, and the Democrats tried to attack us on it and we are out there on IVF even more than them. We are totally in favor of it,” he continued.

This, of course, all flies in the face of recent history: Trump and his Republican allies in Congress have spent recent months espousing their undying support for the fertility treatment, though it was put in harms way in the first place through the legal reasoning of their religious right allies, who contend that personhood begins at or even before conception. That ideology paved the way for the conservative Supreme Court’s Dobbs ruling.

It was not until the Alabama Supreme Court handed down a decision that made that reasoning explicit, declaring embryos to be “babies” and putting IVF in the crosshairs, that Republicans spoke out about their supposed deep and undying love for the procedure. That rhetoric has been rolled out in split screen, as Republicans fight Democrats’ attempts to pass federal IVF protections in Congress, and continue to push for laws that would enshrine fetal personhood at the state level.


Nicole Lafond (@Nicole_Lafond) is TPM’s deputy editor, based in New York. She has also worked as the special projects editor and as a senior newswriter for TPM. She has a master’s degree in journalism from Columbia University and previously covered education in central Illinois.

Immigration vs Democracy: What's driving US voters to the polls in 2024

A new survey by Public Religion Research Institute reveals a sharp divide as Republicans prioritise immigration while Democrats focus on protecting democracy.


Noureldein Ghanem
TRT WORLD
OCT 16, 2024


AP Archive

The only issue on which all sides are almost aligned is the In Vitro Fertilization, or IVF, setting at 88 percent among Democrats, 86 among independents, and 85 percent among Republicans. / Photo: AP Archive


Washington, DC — A new survey has revealed a deep rift between Republican and Democrat voters over the most critical issues shaping the 2024 US presidential race.

Conducted by the Public Religion Research Institute and presented at a Brookings Institution event in Washington DC on Wednesday, the survey of over 5,000 people shows Democrats prioritise the health of democracy, while Republicans place immigration at the top of their agenda.

"There are four (issues) that reach majority among Democrats, the health of our democracy (61 percent), increasing costs of housing and everyday expenses (57 percent), abortion (55 percent), and health care (52 percent)," Robert P. Jones, Founder and President of PRRI, said during the presentation.

This comes in contrast to what Republican voters prioritise; chief among them being immigration at 71 percent, economy at 69 percent, crime at 57 percent, and health of democracy at 51 percent.

Although Republicans and Democrats came relatively close on the issue of the health of democracy, Jones said that both sides "mean something very different by the health of our democracy."

Jones highlighted that the Republicans' top issue, immigration, has taken a massive leap since the last election. It was 38 percent in 2020, marking a 33 percent jump.

He said that the issue of immigration used to be approached pragmatically, but now it has become an ideology, saying, "Between 2020 and 2024 is a move from the wall to the enemy within."

The survey also highlighted another asymmetrical division among both sides, showing that the majority of Republicans and Democrats would only vote for a candidate who shares their views on immigration and abortion, with Republicans setting at 59 percent for immigration and Democrats setting at 56 for abortion.




Worlds apart

In the grand scheme, a crushing 94 percent of Republicans believe things are going in the wrong direction, compared to only 41 percent of Democrats and 70 percent of independents.

Breaking down the voting by ethnicities and religious affiliation, voters again differed massively if the election was held today.

Among those likely to vote for Kamala Harris, 83% are Black Protestants, 70% are unaffiliated, 67% follow other non-Christian religions, 61% are Hispanic Catholics, and 58% are Jewish.

On the other hand, Donald Trump’s support comes from 81% of White Evangelical Protestants, 61% of White Catholics, and 60% of White non-Evangelical Protestants.

The only issue on which all sides are almost aligned is the In Vitro Fertilization, or IVF, setting at 88 percent among Democrats, 86 among independents, and 85 percent among Republicans.



The sleeper issue

Although the US foreign policy issue wasn't included in the survey, Bulwark Columnist AB Stoddard said that a majority of independent voters thought America's reputation had fallen significantly over the past four years.

"America's reputation has changed for the worse in the last four years. 65 percent! America's reputation around the world! This is a stunning statistic," Stoddard said during the discussion that followed the presentation.

Stoddard said it was "depressing" that 65 percent of independents, who are less tribal than Democrats and Republicans, concur with that.

US' reputation has taken significant hit, especially since the start of Israel's carnage in besieged Gaza, in which many argue Washington is complicit due to its support for Tel Aviv in its genocide.

Arab and Muslim Americans have cautioned Democrats against taking their votes for granted, warning of potential electoral fallout. Many are already withholding support, frustrated by both parties' alignment on Washington’s Israel policy — one of the few issues where Republicans and Democrats find rare consensus.

SOURCE: TRT World

Noureldein Ghanem
Noureldein Ghanem is an Assistant Producer at TRT World

After Hurricane Milton, Get Ready for Mold

Thousands may now be at risk of mold-related illnesses following this year’s hurricanes in the American South.



Photograph: Mario Tama/Getty Images

Emily Mullin
WIRED
Science
Oct 16, 2024

After Milton made landfall as a Category 3 hurricane in western Florida last week, some residents who evacuated the area are now returning to discover water damage in their homes. And they may soon find something else: mold.

Mold can begin to grow as soon as 24 to 48 hours after moisture exposure. And Florida’s subtropical climate, which remains hot and humid in October, makes it a perfect breeding ground. Even worse, mold will continue to grow until the source of moisture is eliminated.

Science
Your weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more. Delivered on Wednesdays.


Sign up


By signing up you agree to our User Agreement (including the class action waiver and arbitration provisions), our Privacy Policy & Cookie Statement and to receive marketing and account-related emails from WIRED. You can unsubscribe at any time. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


As climate change ushers in heavier rainfall and more intense storms, mold is likely to become a more common problem. Warmer temperatures add moisture to the atmosphere, which can produce more intense precipitation events. “Mold is absolutely associated with climate change,” says Mary Johnson, a principal research scientist of environmental health at Harvard University. “Those extreme weather patterns, including hurricanes, can allow water to come into a home or any type of indoor space. When it’s damp, the likelihood of mold growing indoors increases.”


Featured Video


Scientist Explains How to Study the Metabolism of Ultra High Flying Geese


Mold growth has previously been documented after major storms that caused flooding and water damage in residential neighborhoods. A few months after Hurricane Katrina hit New Orleans in 2005, researchers with the US Centers for Disease Control and Prevention inspected 112 homes affected by flooding and found that nearly half had visible mold growth. And Johnson’s research has linked higher temperatures and increased precipitation to more mold spores in outdoor air.

A type of fungi, mold is a natural part of the environment and has been on Earth for millions of years. Outside, it plays an important role by decomposing organic material, such as dead trees and leaves. But indoors, mold can be a health risk, especially to children, people with allergies and asthma, and those with weakened immune systems.



Mold spores—reproductive cells that act like seeds—travel through the air both outdoors and indoors. When people breathe in these spores, they can cause respiratory symptoms, itchy eyes, infections, or skin rashes. Inhaling them can also trigger asthma attacks that can be serious. Not everyone is affected by mold exposure, though.

“Our bodies, for the most part, deal with mold,” says Ronald Saff, an internal medicine doctor, allergist, and immunologist in Tallahassee, Florida. “People are exposed to molds at fairly high concentrations if they go for a walk in the park or in wooded areas.”


For most healthy people, short-term mold exposure isn’t usually a problem. But for individuals with asthma and other chronic lung diseases, or those who are immunocompromised—including transplant and chemotherapy patients—it’s not a good idea to go into a moldy home. Mold can worsen underlying respiratory diseases and cause fungal infections in the lungs of people with weakened immune systems. With the highest percentage of residents age 65 and older in the nation, many Floridians may be at risk of getting sick.


Over a long period of time, even healthy people who are exposed to a wet, moldy, indoor environment may be at risk of developing allergies or asthma, Saff says. A comprehensive study conducted by the National Academy of Medicine and released in 2004 found there was sufficient evidence to link indoor exposure to mold with upper respiratory tract symptoms, such as coughing and wheezing, in otherwise healthy people. More recent studies have suggested that children exposed to indoor mold are more likely to develop asthma.

Scientists agree that mold can cause respiratory problems for some people, but there’s little evidence that it can induce fatigue, dizziness, headaches, and nausea—a collection of symptoms sometimes referred to as “sick building syndrome” and blamed on indoor mold. And contrary to popular belief, Stachybotrys chartarum, commonly known as black mold, is likely no more dangerous than other types of mold.

Ebrahim Ahmadisharaf, an assistant professor of civil and environmental engineering at Florida State University, has been studying residential flooding and mold growth after hurricanes to learn more about its potential impacts on respiratory health. He and a team of hydraulic engineers and public health scientists surveyed 60 water-damaged homes in New Orleans and Baton Rouge, Louisiana, as well as in South Florida, New York City, and Philadelphia after Hurricane Ida in 2021 and Hurricane Ian in 2022.

“It’s not just these extreme events that are becoming more frequent and intensified,” Ahmadisharaf says. “You can also have these chains of small rainfall events happening that can contaminate your indoor air.”

His team is aiming to find the major drivers of mold growth and their correlation with asthma and allergy symptoms. They first gathered information from homeowners on building characteristics, such as roof conditions and ventilation systems, as well as flood levels around their homes and how long flooding lasted. They then visited the properties and collected indoor and outdoor air and dust samples, from which they were able to identify more than 40 species of mold. They also collected data on whether occupants had respiratory symptoms or visited the hospital post flooding.

The team used machine learning models to help parse the data, which showed that the age of a roof, maximum flood depth, use of exhaust fans and their airflow rate, and how often residents opened windows were all important factors for mold growth. Ahmadisharaf says most of the mold issues researchers noticed were in low-income households. The research, which is supported by the National Science Foundation, has not yet been published in a peer-reviewed journal.

For those returning to a water-damaged home, Saff says, there’s usually no need to pay hundreds of dollars for mold testing. Mold is easily identifiable by sight—it looks like fuzzy, slimy, or powdery spots—and by its musty smell.

He recommends sealing up moldy parts of the home with a tarp and creating a separate sleeping area if possible. Ventilate the area with open windows or fans. HVAC systems can spread mold, so they shouldn’t be turned on until mold has been removed.

“We start seeing the threat of mold whenever there’s moisture and excessive water,” says Jae Williams, director of communications for the Florida Department of Health. “So certainly, after a storm like the two that we’ve just had in the last couple of weeks, there’s a lot of storm surge and also some flooding.”

The Federal Emergency Management Agency can provide financial assistance to help low-income homeowners and renters repair or replace mold-damaged homes following hurricanes.

For those tackling cleaning their homes without professional help, the CDC recommends wearing an N95 respirator, gloves, and eye protection. Bleach or dish detergent can be used with water on hard surfaces. Affected areas should be allowed to dry completely. Carpet, upholstered furniture, and other absorbent materials that are moldy may need to be replaced.

“If it’s not dealt with,” Williams says, “it’s just going to continue to become a bigger problem and more pronounced in your home.”



Emily Mullin is a staff writer at WIRED, covering biotechnology. Previously, she was an MIT Knight Science Journalism project fellow and a staff writer covering biotechnology at Medium's OneZero. Before that, she served as an associate editor at MIT Technology Review, where she wrote about biomedicine. Her stories have also... Read more

Wednesday, October 16, 2024


Another Russian Anti-War Activist Forced To Leave Serbia, NGO Says

Russian anti-war activist Anton Bobryshev (file photo)
Russian anti-war activist Anton Bobryshev (file photo)
October 16, 2024

Another Russian anti-war activist has been denied a request for a temporary residency permit in Serbia and ordered to leave the country, the Russian Democratic Society announced on October 16.

The organization said in a statement that the decision showed that the "persecution of Russian citizens in Serbia due to their anti-war views unfortunately continues."

The Serbian Interior Ministry (MUP) on September 16 rejected Anton Bobryshev's request for a temporary residency permit based on ownership of real estate and ordered him to leave the country within 30 days.

Three days later, the MUP issued a new decision ordering him to leave the country within 30 days.

Petr Nikitin of the Russian Democratic Society told RFE/RL that Bobryshev filed appeals against both decisions.

Bobryshev's lawyer also submitted a request to the Administrative Court to postpone the order to leave the country, which could not be carried out while the appeal process on the refusal of temporary residence is ongoing.

Nikitin said Bobryshev participated in anti-war rallies in Belgrade and organized a rally in June 2023 in Pancevo, a city northeast of Belgrade, in support of opposition politician and Kremlin critic Aleksei Navalny, who died in prison in Russia in February.

RFE/RL asked the MUP to clarify the decision not to allow Bobryshev to stay temporarily in Serbia but did not receive an answer.

Bobryshev and his wife moved to Serbia eight years ago.

The cancellation of the temporary residency permits of certain members of the Russian diaspora who participated in anti-war protests began in the summer of 2023 after the United States imposed sanctions on the then-director of the Security Agency (BIA), Aleksandar Vulin, due to his ties to Russia and other things.

In July 2023, a temporary residency permit was denied to anti-war activist Vladimir Volokhonsky, and then a month later to Yevgeny Irzansky. Both had expressed a clear anti-war attitude toward Russia's full-scale invasion of Ukraine. In both cases, the MUP said that there were "security obstacles" to extending their stay.

In March 2024, the MUP refused to issue a permanent residency permit to the three-member Russian family Tereh. The reason for the refusal was also linked to security.

A more recent example is the case of Yelena Koposova, a Russian citizen whose application for permanent residence was rejected for the second time in August. The MUP explained the decision by saying that the security service had data "which is an obstacle to the approval of its request."

Koposova, a literary translator from St. Petersburg, moved to Serbia with her husband and two children in 2019 and purchased a house.

The police and the BIA have not responded to RFE/RL's inquiries since the banning of Russian citizens who oppose the war began in the summer of 2023.

Serbia has refused to join Western sanctions against Russia for 2 1/2 years, and Serbian officials are among the few in Europe who meet with Kremlin officials.

 

Animal Life Discovered Below The Seafloor at Hydrothermal Vents


Press Release
University of Vienna
October 16, 2024
LinkedIn
Animal Life Discovered Below The Seafloor at Hydrothermal Vents
Giant tubeworms in shallow subsurface cavity below deep-sea hydrothermal vents © CC BY-NC-SA Schmidt Ocean Institute

The discovery of animal life below the seafloor at hydrothermal vents in the East Pacific Rise is reported in a Nature Communications paper. The research sheds new light on the complex habitats that are found in the deep ocean.

The East Pacific Rise is a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean. It contains numerous hydrothermal vents — openings in the seafloor that form where seawater and magma beneath the Earth’s crust meet.

Giant tubeworms on the seafloor surface at 2500 m water depth © CC BY-NC-SA Schmidt Ocean Institute

Previous research has focused on organisms living on the seafloor around these vents, including tubeworms and mussels, but the possibility of animal life existing below the shallow seafloor crust has remained largely unexplored.

Monika Bright, Sabine Gollner and colleagues discuss the dive operations © CC BY-NC-SA Schmidt Ocean Institute

Monika Bright, Sabine Gollner and colleagues sailing on the Schmidt Ocean Institute research vessel Falkortoo embarked on a series of dives to a hydrothermal vent site located at 2,515 m depth on the East Pacific Rise using the remotely operated vehicle SuBastian.

When exposing sections of the seafloor crust using a large chisel with the arms of the vehicle, they uncovered warm, fluid-filled cavities inhabited by various species previously only found on the seafloor, including giant tubeworms and mobile animals such as worms and snails.

A glimpse into the uncovered warm, fluid-filled subsurface cavity at the deep-sea hydrothermal vents. A chisel was used to dig into the subsurface. © CC BY-NC-SA Schmidt Ocean Institute

The authors suggest that larvae from seafloor communities may settle in these subseafloor habitats, indicating a complex connectivity between seafloor and subseafloor ecosystems.

The discovery of animal habitats in the crustal subseafloor, the extent of which is currently unknown, increases the urgency for protections against potential future environmental changes, the authors suggest.

a Tubeworm clumps growing on lobate lava shelf at surface and in cracks (dive S0543). b Lobate lava with three uppermost shelves and cavities shown, lava drips (arrow) at the roof of shelves (dive S0560). c Six subsurface cavities visible after lifting of lava shelves (recovery dives 1, S0552; 2, S0554; 3, S0556; 4, S0557; 5, S0558; 6, S0560). d Opened subseafloor cavity with bottom covered by white microbial mat and live Paralvinella spp. (asterisk) and large Riftia pachyptila (arrow), roof with alive and tubes of Oasisia alvinae (double arrow) (dive S0556). e,f Recovered lava shelf shown upside-down, with O. alvinae wrapped around lava drips protruding from the ceiling of the opened crustal subseafloor cavity (dive S0552). g Upside-down lava shelf with O. alvinae mostly growing from crack downwards into cavity (dive S0560). h Upside-down lava shelf with R. pachyptila growing from crack upwards towards the seafloor (dive S0552). m = meter; cm = centimeter; mm = millimeter. — Nature

Animal life in the shallow subseafloor crust at deep-sea hydrothermal vents, Nature (open access)

 

Osmotic Energy Conversion Discovered in Hydrothermal Vents Provides Clues to Life’s Beginnings


Press Release
Earth-Life Science Institute (ELSI)
October 1, 2024
Osmotic Energy Conversion Discovered in Hydrothermal Vents Provides Clues to Life’s BeginningsVector plots showing the direction and intensity of the preferred orientation of the (001) plane. The diffraction patterns at two different locations (line scans) were analyzed and plotted. — ELSI

Researchers experimentally demonstrated that hydrothermal vent precipitates, located deep in the ocean, contains aligned nanopores that enable selective ion transport, thus facilitating osmotic energy conversion from ion gradients. A key finding is that selective ion transport, typically associated with biological cell membranes, can occur through naturally formed inorganic nanostructures in geochemical settings.

This discovery offers new insights into how life-sustaining energy harvesting processes can arise abiotically from long-lasting chemical disequilibria in deep-sea hydrothermal vents. Additionally, it highlights potential strategies for developing blue energy technologies utilising salinity gradients.

In the deep sea, where sunlight cannot reach, massive structures known as hydrothermal vents (HVs) rise from the ocean floor. These chimney-like structures continuously release hot water containing various metal ions into the cold seawater, gradually growing over time, sometimes reaching heights of up to 60 meters. These vents also support a unique ecosystem distinct from that on the Earth’s surface.

A deep-sea hydrothermal vent with aligned nanopores enabling selective ion transport and ion gradient energy conversion. Credit: Reproduced from Lee et al., Nat. Commun. 2024

In recent years, similar structures have been discovered not only on Earth but also on ice-covered celestial bodies like Saturn’s moon Enceladus. Since HVs may exist on ancient Earth before life emerged, researchers believe they may have played a crucial role as “natural chemical synthesis systems,” potentially contributing to the origin of life on Earth.

An international team led by researchers from the Earth-Life Science Institute (ELSI) and RIKEN Center for Sustainable Resource Science studied HV samples collected from the “Shinkai Seep Field,” located on the northwestern slope of the Mariana Trench, one of the deepest trenches on Earth, at a depth of approximately 5,700 meters. Alkaline hot water generated from the reaction between olivine and water forms white smoker-type HVs primarily composed of a mineral called brucite, which has a plate-like structure (Figure 2a).

Microscopic observations of the collected samples revealed that small plate-like crystals, approximately 100 nanometers in size, assembled to form a thick membrane, creating a pathway for hot vent water and seawater (Figure 2b). These membranes exhibited periodic stripe patterns, originating from the stacked multiple layers, and grew to a thickness of 200 to 400 micrometers (Figures 2c, d, e).

a Photograph of HV precipitates collected from the Shinkai Seep Field. b, c Cross-polarized optical microscope images of vertical (b) and horizontal slices of HV (cross-section, c). In the horizontal slice image, vent fluid channels and periodic line patterns in the HV wall are indicated as yellow asterisks and red arrows, respectively. d–g SEM images of a naturally cleaved HV fragment. d, e Inorganic walls with different cleavage directions. The walls show stratified structures, with the layers following the shape of the wall. f Magnification of the wall (boxed area in e) revealing a sublayer structure with consolidated features. g Sublayer structures in different locations of walls. Sublayers 2 to 5-µm thick (yellow square brackets) constituted the wall and exhibited a uniaxial texture. The uniaxial features result from the array of multiple nanocrystals shown in the inset. h TEM image of the crystals constituting the sublayers. i HAADF-STEM image of the crystal with nanopores visible inside. — Nat. Commun. 2024

The researchers conducted synchrotron X-ray diffraction experiments to investigate the structure of the mineral membranes in detail. Multiple regions of the sample were scanned with X-rays, and the directions with the strongest diffraction intensity were indicated with arrows (Figure 3a). In this figure, the alignment direction of the brucite crystals is colour-coded. Remarkably, throughout the scanned sample, the plate-like brucite nanocrystals were found to be orderly and continuously arranged, radiating outward from the vent fluid channel to the seawater (Figure 3b). This arrangement confirmed that nanopore structures suitable for ion transport were formed throughout the entire sample, which has a height of 80 cm.

a An optical image of an HV slice (above) and its corresponding 3D map of scattering intensity (below). In the 3D intensity map, the scattering intensity at individual scanning points was integrated and converted into single values. b–e WAXS analysis on the HV wall sample. b Optical image of the scanning area. c Selected brucite 001 diffraction patterns at multiple points (red squares in b). Black double-headed arrows show the preferred orientation direction of the brucite (001) plane. Schematic images showing the preferred orientation of the brucite layers are shown below the diffraction patterns. The crystal structure of brucite consists of an edge-shared MgO6 layer in the (001) plane and a layered hydroxide stack along the c-axis. d Vector plots showing the direction and intensity of the preferred orientation of the (001) plane. The diffraction patterns at two different locations (line scans) were analyzed and plotted. The black lines in (b) show the location of the line scan. The color and length of the vectors represent the value of the highest scattering intensity of the asymmetric ring. The direction of the vector indicates the orientation of the strongest intensity axis of the asymmetric ring and shows the preferred orientation direction. e 2D map of the vector plot overlayed on the optical image shown in (b). f Schematic of the brucite (001) plane arrangement around the channel based on the WAXS/SAXS scanning and POM analysis. The corresponding c-axis of brucite is also shown. — Nat. Commun. 2024

To validate this hypothesis, they immersed the samples in environments with varying concentrations of ions such as sodium and potassium present in seawater, examining ion transport (Figure 4a). The results showed that the surface charges of the nanopores allowed the entire HV structure to function as a selective ion transport material, converting differences in concentrations of sodium ions, potassium ions, chloride ions, and hydrogen ions into electrical energy (Figure 4b). This suggests that natural HVs may function as osmotic power generation systems, selectively transporting diverse ions from seawater to generate electrical energy.

All living beings generate energy by leveraging ion concentration differences within their cells. Therefore, the question of how life began to utilise this mechanism is a crucial in the origins of life. The results of this study demonstrate that energy conversion utilizing ions essential for life can occur naturally through geological processes.

Concentration differences of ions are widely observed in nature, and similar phenomena may have taken place on ancient Earth before the emergence of life. Additionally, recent research has confirmed hydrothermal activity on ice-covered celestial bodies. In the future, samples from these celestial bodies may be brought back to Earth for detailed analysis, potentially revealing similar structures and energy generation phenomena.

Osmotic energy conversion in serpentinite-hosted deep-sea hydrothermal vents, Nature (open access)