Tag Archives: problem

Addressing Social Media Toxicity: Algorithms Alone Won’t Solve the Problem

Posted on by
Reply

Can I address the issue of social media?

MoiraM/Alamy

The impact of social media polarization transcends mere algorithms. Research conducted with AI-generated users reveals that this stems from fundamental aspects of the platform’s operation. It indicates that genuine solutions will require a re-evaluation of online communication frameworks.

Petter Törnberg from the University of Amsterdam and his team created 500 AI chatbots reflecting a diverse range of political opinions in the United States, based on the National Election Survey. Utilizing the GPT-4o Mini Large Languages Model, these bots were programmed to engage with one another on simplified social networks without commercial influences or algorithms.

Throughout five rounds of experiments, each consisting of 10,000 actions, the AI agents predominantly interacted with like-minded individuals. Those with more extreme views garnered greater followership and reposts, increasing visibility for users attracted to more partisan content.

In prior research, Törnberg and his colleagues explored whether different algorithmic approaches in simulated social networks could mitigate political polarization. However, the new findings appear to challenge earlier conclusions.

“We expected this polarization to be largely driven by algorithms,” Törnberg states. “[We thought] the platform is geared towards maximizing engagement and inciting outrage, thus producing these outcomes.”

Instead, they found that the algorithm itself isn’t the primary culprit. “We created the simplest platform imaginable, and yet we saw these results immediately,” he explains. “This suggests that there are deeply ingrained behaviors linked to following, reposting, and engagement that are at play.”

To see if these ingrained behaviors could be moderated or counteracted, the researchers tested six potential interventions. These included time series display only, diminishing the visibility of viral content, concealing opposing viewpoints, amplifying sympathetic and rational content, hiding follower and repost counts, and obscuring profile bios.

Most interventions yielded minimal effects. Cross-partisan engagement shifted only by about 6% or less, while the prominence of top accounts changed by 2-6%, but some modifications, like concealing bios, worsened polarization. While some changes that reduced user inequality made extreme posts more attractive, alterations aimed at softening partisanship inadvertently drew more attention to a small group of elite users.

“Most activities on social media devolve into toxic interactions. The root issues with social media stem from its foundational design, which can accentuate negative human behavior,” states Jess Maddox of the University of Georgia.

Törnberg recognizes that while this experiment simplifies various dynamics, it provides insights into what social platforms can do to curb polarization. “Fundamental changes may be necessary,” he cautions. “Tweaking algorithms and adjusting parameters might not be sufficient; we may need to fundamentally rethink interaction structures and how these platforms shape our political landscapes.”

Topic:

Source: www.newscientist.com

Trolley Problem: The Internet’s Iconic Moral Dilemma Transformed into Video Games | Gaming News

Posted on by
Reply

In 1967, British philosopher Philippa Foot unwittingly sparked one of the most enduring memes on the internet. The infamous runaway trolley is racing toward five individuals tied to the tracks. You have the power to pull a lever to redirect the trolley toward another track where a single person is bound. Would you act to save five lives at the cost of one?

What if one of the tracks spiraled into a dramatic loop? Or if the trolley was replaced by a menacing Thomas the Tank Engine? Perhaps the entire dilemma morphed into a commentary on contemporary political debates? The trolley problem, initially posed as a meditation on ethical decision-making, found renewed life in the 2010s as the inspiration for a myriad of absurd, self-referential memes. Now, it appears poised to embark on a third chapter through the surreal interactive comedy game, The Trolley Solution.

Each level serves as a mini-game, ingeniously designed around thought experiments. There’s always a trolley, a lever, an ethical quandary, and a twist that derails expectations. Tracks are dissected into puzzle pieces that players must fit together against the clock. Commuters alongside the rail must maintain their emotional balance and enjoy serotonin boosts from scrolling through social media. One segment flows into a brief visual novel about a Japanese girl who develops feelings for someone on a streetcar that threatens to eliminate her high school rival.

Perfectly tailored for the social media era… trolley solutions. Photo: Bydandans

It’s undeniably absurd, echoing the ludicrous nature of the original trolley problem. “It’s a serious issue presented in an outrageous manner,” explains Baidandan, developer of Solochile. From a Reddit perspective, he puts it succinctly: “It’s a free real estate for shit posts.”

With the foundational joke already well-explored, Baidandan opted to take bold creative risks with the mini-games, striving to transform the dilemma into quirky scenarios that lead to final choices. “Some versions felt too bland and overly complex,” he notes. “Or I couldn’t conceive of a mini-game that adhered to the four guiding principles I established.” These principles state that each mini-game must be engaging, tied to the moral dilemma, introduce unique elements, and subvert expectations.

If all of this seems a bit gimmicky, it’s likely because Trolley Solutions functions best as a comprehensive interactive sketch inspired by a singular joke. Yet, it’s a joke filled with charm and abundant punchlines (each mini-game lasts mere seconds to minutes, and the level selection screen hints at a brief total runtime).

https://www.youtube-nocookie.com/embed/oONZ_f4kwiU?wmode=opaque&feature=oembed" title="The Trolley Solution – Official Gameplay Reveal Trailer | Latin American Games Showcase 2025" height="480" width="854" allowfullscreen="

In many aspects, it is perfectly suited to the social media landscape. The humor is designed for the internet, and the quick-fire mini-games are ideal for casual gamers scrolling through TikTok. “I aimed to create something accessible and enjoyable,” Bydandans remarks. “My previous games were often too technical and hardcore for the average player. This time, I wanted to craft something everyone could appreciate.”

“Enjoyment” is a peculiar term when discussing ethical dilemmas. What would Baidandan do if confronted with the original trolley problem? “I would consider options with fewer legal repercussions,” he confides. “I’d call the police, yell for help, and attempt to untie the victims.” Thus, he disregards the constraints of the thought experiment, crafting a more engaging experience instead? That seems to fit the bill.

Trolley Solutions is anticipated to be released on PC this winter

Source: www.theguardian.com

Is your phone causing distractions? Keeping it out of reach may not solve the problem

Posted on by
Reply

Smartphones can be distracted from other tasks

Phelings Media/Shutterstock

Can you scroll through at work and take a little care about your smartphone? One solution is to keep your phone out of reach, but unfortunately this doesn’t seem to work.

“People flip the phone over and hide it under the notebook. Sometimes you see a slightly fatal “throwing it over my shoulder” thing.” Maxi Heitmayer At the London School of Economics and Political Science in London. He previously studied phone use and found that people interact with their devices About every 5 minutes.

To see if this distraction could be avoided, Heitmayer and his colleagues recorded 22 college students and office workers, ages 22 to 31. One day, participants kept their phones within reach of their phones. Soon they kept their phones on a second desk, 1.5 metres away. In other words, I had to stand up to check it out.

Researchers found that volunteers spent an average of 23 minutes doing leisure activities over the phone on their first day, but 16 minutes, when the devices were even further apart. However, they were no longer working on the second day. Instead, participants spent more time running their activities slowly on their laptops, mainly on social media. “We use less mobile phones, but the whole thing that’s scrolling on social media is scrolling longer than we intended to move to a laptop,” says Heitmayer.

“This shows that distractions are not itself the device, but the underlying activity. daantje derks At Rotterdam, the University of Erasmus, Netherlands.

However, she points out that large-scale studies tracking people in a normal working environment are needed to verify these initial results. “This is an experimental lab study. People usually have others around and their lives are much more dynamic than this setup.

topic:

Source: www.newscientist.com

This Month’s Top New Science Fiction: George R.R. Martin and Three-Body Problem Graphic Novels

Posted on by
Reply

Game of Thrones author George R.R. Martin, editor of an anthology set in the Wild Cards universe

Paras Griffin/Getty Images

December is traditionally a quiet month in the publishing world, and that’s true this year as well, with fewer new books than usual to tempt us sci-fi geeks. However, there are some novels that I find very enjoyable. One example is Makana Yamamoto’s debut novel, which was described by the publisher as an “adventurous love letter” to Hawaii. And less interesting, but just as fascinating, is Arthur C. Clarke Prize winner Jane Rogers’ new collection of short stories, all climate fiction and (according to the publisher) “no easy answers. “It raises questions about personal responsibility.” It might also publish a huge and expensive 10-volume graphic novel, an adaptation of Liu Cixin’s novel. three body problem Put it on my Christmas wishlist – it sounds really epic.

The publisher pitches it as follows: oceans 8 meet blade runner – And what’s not to love there? – It follows Edie, who has just been released on parole from an icy prison planet, and meets Angel, the woman who sold her eight years ago. Angel offers Edie one last job. His goal is to defeat the billionaire “god of technology” that he was unable to stop last time. This has a lot of hype from a major publisher and looks like a lot of fun. By the way, hamajan is borrowed from the Hawaiian pidgin and is said to mean “a state of disorder or chaos.” A mess.

This is the latest anthology set in . wild card In space, an alien virus released into the world gives superpowers to 1% of the people it infects. This is the third book in the series, edited by Martin and featuring writing from a variety of authors. wild cardAfter the “British Arc” of queens over knives and three kings. The story is set on the fictional island of Coon, which is connected to mainland Cornwall only by an ancient tidal channel.

Jane Rogers won Britain’s highest science fiction award, the Arthur C. Clarke Award, in 2012. Jesse Lamb’s will. (I really liked this book. It’s set in a world where all pregnant women are infected with a deadly virus, and it’s narrated by a teenager.) A collection of climate fiction stories that span viral pandemics. Until the end of 22n.d. From the Australian outback, where bushfires are raging, to Oxfordshire, where an old man is chained to an old beech tree about to be cut down. I especially love sounds set in a distant future in space, where Earth is barren but may be starting to recover.

This space opera is in part a sequel to a work with a great title. August Kitoko and the mechas from space. Of course, this work features a “ragtag group of misfits” fighting a “giant army of mechs” to destroy humanity. Our main characters are the super attractive pop star Ardent Violet and her new boyfriend August Kitoko. The book also promises a “mysterious omnipotent AI” and a coalition of aliens.

Eve Ridley (left) as The Follower and Kai Shimooka as Sophon in “Three Body Problem”

© 2024 Netflix, Inc.

This epic 10-volume graphic novel adaptation is for the full-length Cixin Liu lovers out there, but I suspect there’s probably some in there. new scientist Dear readers. The film, which was nominated for the 2024 Hugo Award for Best Graphic Story or Comic, is said to include several additional features, including a transcript of an interview with character Ye Wenjie by the Beijing PSB Criminal Investigation Squad. are. Liu himself says, “I believe graphic novels provide the widest possible canvas for science fiction.” Wouldn’t it be a good idea to put it on your Christmas list?

After romantasy (romance + fantasy), sci-fi romance seems to be the most popular genre these days, and I’m all for it. It’s about Ada being given an undercover mission by a group of rebels that happened to be at a charity event, where she finds Ryan, who tries to stop her. Here’s how the publisher describes fans of Becky Chambers and Martha Wells: I mean, that’s me.

21 second halfcent In this century, as the United States is ravaged by global warming, a mother and daughter escape from the Inside Project, a climate change relief program where they have been treated as lab rats for the past 22 years. As the weather continues to worsen and the remaining humans struggle to survive, they go on the run and encounter women from their mother’s past.

This is the latest installment in Zahn’s Icarus series, and is set in a universe where an alien race called the Icari disappeared 10,000 years ago, leaving behind portals through which people could be transported to the stars. In this expedition, Gregory Rourke and his partner Selene are tasked with finding these alien artifacts, only to find themselves on a distant planet, by a group of aliens called the Unmei who have their own portal plans. I realize what I’m facing.

new scientist book club

Do you like reading? Join our friendly group of fellow book lovers. We delve into exciting new titles every six weeks and give members free access to book excerpts, author articles, and video interviews.

topic:

Source: www.newscientist.com

The hidden radioactive waste problem lies at the core of achieving net zero emissions

Posted on by
Reply

A dog chased a ball past me at full speed across the open fields of Seascale Beach, Cumbria. The beach is surrounded by a small park, rows of shops, and houses, with tall chimneys and large rectangular buildings visible on a vast industrial site as you walk north.

Close to Seascale Beach is the Sellafield complex, a 2 square mile nuclear facility located 5 km away. Sellafield is home to most of the UK’s radioactive nuclear waste and the world’s largest store of plutonium.

I visited Sellafield earlier this year to learn about the management of Britain’s nuclear waste. It was an eye-opening and expensive lesson in dealing with hazardous material with no clear plan.

Sellafield played a crucial role in producing plutonium during the Cold War. The current cleanup operation involves processing and storing spent nuclear fuel, cooling and stabilizing it, then storing it in silos covered with steel and concrete.

Initially, safe long-term storage was not a priority, leading to waste being disposed of from decades ago. The process of moving waste from dilapidated silos to more modern stores is ongoing.

Read More:

  • Meet the rebels building fusion reactors in your neighborhood
  • Where next for nuclear energy?
  • Why do nuclear fission and fusion both release energy?

A recent report by the National Board of Audit highlighted that Sellafield is still in the early stages of the cleanup mission, expected to last until 2125 with an estimated cost of £136bn, showcasing uncertainty about the exact tasks and timeline.

The plan for the most dangerous nuclear waste is to bury it deep underground in a geological disposal facility (GDF). Finding a suitable location involves not just solid rock but also a willing community.

Three communities are currently in discussion about building a GDF facility, with experts believing it to be the best option. Several countries are also working on similar facilities.

The complexity of site selection may delay the facility’s opening until the 2040s or 2050s, amidst a push for new nuclear power to reduce emissions and reach net zero.

As we navigate through the challenges of nuclear waste management, experts like Professor Claire Corkhill from the University of Bristol play a crucial role in advancing our understanding of radioactive waste.

About our expert Professor Claire Corkhill

Claire is Professor of Mineralogy and Radioactive Waste Management in the School of Earth Sciences at the University of Bristol.

Her work has been published in magazines material, nature, and ceramics.

Read More:

  • Nuclear fusion: Inside the construction of the world’s largest tokamak
  • Instant Genius Podcast: The race to bury nuclear waste in hidden bunkers
  • Sticky atoms and devastating iron: The strange science behind nuclear fusion

Source: www.sciencefocus.com

The enigmatic black hole “parsec problem” could potentially be resolved

Posted on by
Reply

Just like a runner hitting the wall at the end of a race, supermassive black holes face a similar challenge as they approach each other, coming to a virtual standstill in the final parsec.

Recent research indicates that dark matter could be the key to overcoming this last obstacle.

This is because researchers have identified a crucial behavior of dark matter that has been previously overlooked – its ability to interact with itself.

“The assumption of dark matter particles interacting is an additional component not present in all dark matter models,” explained the co-authors of the study. Dr. Gonzalo Alonso Alvarez. “Our argument is that only a model with these features can address the final parsec problem.”

What is the final parsec problem?

The final parsec problem refers to the challenge that slows down the black holes before they merge.

This discovery follows a previous study that detected gravitational waves resulting from the merging of supermassive black holes, each a billion times the mass of the sun.

In the new study published in Physics Review Letter, researchers found that the black holes came to a halt at just one parsec away from each other.

The question remains: if black holes cannot merge, how are gravitational waves produced?

The answer may lie in a better understanding of dark matter behavior, which may facilitate the merger of supermassive black holes over the final parsec.

When two galaxies collide, their supermassive black holes begin to orbit each other. Gravity slows them down, bringing them close to merging before their orbits shrink too much to support the final collapse. Interaction with a halo of dark matter then absorbs the remaining orbital energy, allowing the black holes to eventually merge.

This new model is supported by the Pulsar Timing Array, which detects gravitational waves originating from supermassive black hole mergers predicted by Alonso Alvarez and his team.

“Our study offers a new perspective on understanding the nature of dark matter particles,” said Alonso-Alvarez. “Observations of supermassive black hole mergers can provide insights into these particles.”

Read more:

Source: www.sciencefocus.com

Some skeptics warn that EVs will strain the power grid, but they could actually help to solve the problem

Posted on by
Reply

picture
Electric cars scares some people of the dark: their batteries produce much less carbon dioxide but require more power to run, prompting ominous warnings that Britain and other wealthy countries could plunge their citizens into darkness if they ban new petrol and diesel sales.

In recent months, UK net-zero skeptic newspapers have warned that a shift to EVs “risks overwhelming the grid and causing catastrophic blackouts” if intermittent solar and wind don't provide the needed power. Another article argued that “we don't need an enemy force to plunge us all into darkness – just some electricity customers doing their normal thing on a normal winter's night.”

But many who work in the electric vehicle industry believe these fears may be unfounded, arguing that the transition to electric vehicles is an exciting, potentially lucrative opportunity to build a smarter, greener energy system.


In the UK, polluting coal-fired power plants have been largely replaced by wind farms and solar panels. These renewable energies do not emit carbon dioxide, but they suffer from intermittency problems and cannot provide enough power on cloudy days or at night when there is no wind. Add in the prospect that all new cars will be electric by 2035 and it is not an exaggerated question how the power grid will keep supply and demand in balance.

Shifting demand

The transition to electric vehicles will undoubtedly require more electricity generation as electric vehicles, rather than land-based fossil fuels, become the primary source of energy for transportation, but smart technology can be used to shift demand away from peak times, such as 5pm in winter, when demand for electricity risks outstripping supply.

This isn't just a pipe dream: home charger company MyEnergy calculates that if balancing services were enabled across all installed compatible chargers, it could “provide over 1GW of demand-shifting flexibility to the grid, more than 98% of the UK's major fossil fuel power stations.”

Octopus Energy, which has quickly grown to become the UK's largest electricity supplier, says its Go electricity tariff manages the charging of the batteries of 150,000 electric vehicles. Charging them all at once would require 1GW of power, but smart chargers hold off charging until off-peak hours at night, shifting demand away from peaks. Electricity is also cheaper during off-peak hours, with clear benefits for consumers: Octopus says its customers save an average of about £600 a year.




In the UK, polluting coal-fired power stations have largely been replaced by wind farms and solar panels, which suffer from “intermittency issues”. Photo: Martin Meissner/AP

One gigawatt is the equivalent of a medium-sized power station, enough to power 600,000 homes. Electric vehicles on UK roads are already on the rise in the UK. Peak electricity demand in winter is 61.1GWAccording to the National Grid, delaying charging for just a few hours can help reduce energy consumption.

Jack Fielder, chief strategy officer at MyEnergy, said: “If every EV charger could provide a grid balancing service and every driver took part in a grid balancing program, we could collectively eliminate periods of strain on the grid.”

It could also be useful when power supply exceeds demand, such as on warm, windy nights, said Chris Pateman-Jones, chief executive of charging company Connected Curve.

“Instead of wasting renewable energy, I see EVs as a giant sponge,” he says. For consumers, there will be little change: Connected Curve data shows that most cars are already charged by midnight, leaving them idle for hours before they're needed.

Powered by car battery

It's not just the timing of when electrons flow into car batteries that will help the National Grid Electricity Supply Operator (NGESO), the company responsible for balancing the U.K. power grid: It calls demand shifting a “low-regret action that will help reduce the impact on peak demand and reduce renewable curtailment,” but it also wants electrons to flow in the other direction.

Vehicle-to-grid technology is an attractive prospect: instead of building power plants, hydroelectric storage, or stationary battery fleets, the idea is to harness the energy stored in car batteries. Cars could become portable power packs, providing backup for homes in the event of a blackout, and even allowing drivers to earn money by selling power back to the grid.

NGESO is Annual estimate It predicts what the UK electricity system will look like in 2035 and 2050. It sees a growing role for cars feeding power back into the grid, and in the most optimistic scenario, capacity could reach 39GW (equivalent to one-tenth of the vastly expanded generating capacity).

Skip Newsletter Promotions

Source: www.theguardian.com

From Cixin Liu, author of “The Three Body Problem,” to Douglas Preston, this month’s top new science fiction discovery

Posted on by
Reply

In The Truth of Areke, the last remaining free city in the Eternal Desert has been under siege for centuries.

Shutterstock / Liu Zishan

This month we have new works by several big name authors. Cixin Liu and Ann Leckie both have easy-to-read collections of short texts. It also depicts a dystopian future by award-winning Thea Obret, and a world where woolly mammoths have been brought back from the world. Douglas Preston's bestseller.He also loves the sound of Scott Alexander Howard's debut song another valleya town where past and future versions exist in the following valleys, and the space adventures of Sofia Samatar. Practice, horizon, and chain. There are so many things I want to read and not enough time…

This is a collection of short stories by science fiction author Liu, who is currently on the rise thanks to a new Netflix film. three body problem, from essays and interviews to short stories. I love this excerpt from an essay about science fiction fans. In it he calls us “mysterious aliens in the crowd.” They “jump like fleas from the future to the past and back again, floating like gas clouds between nebulae. In an instant we can reach the edge of the universe or tunnel into quarks.” or swim inside the core of a star.''Aren't we lucky to have a world like this on our shelves?

Leckie is a must-read author for me, and this is the first complete collection of her short stories, ranging from science fiction to fantasy. On the sci-fi side, we'll be able to dip in again. imperial latch And we're also promised to “learn the secrets of the mysterious Lake of Souls” in a brand new novel.

In the disastrous future, an 11-year-old girl arrives in Morningside with her mother. Once a luxury high-rise, Morningside is now another crumbling part of Island City, half submerged under water. Obrecht won the Orange Prize for Fiction in 2011 for her debut novel. tiger's wife.

Samatar won all kinds of awards for his first novel. Stranger in Olondria. Her latest work depicts the story of a boy who grew up working on a mining ship in the stars, but whose life changes when he is given the opportunity to receive an education at the ship's university. Sounds interesting.

A boy grows up working on a mining ship surrounded by starry skies in The Practice, Horizon, and The Chain.

Getty Images

It's set in a Rocky Mountain valley, where guests at the luxury resort can see woolly mammoths, giant ground sloths and Irish moose brought back from extinction through genetic engineering. But then a series of murders begins, and the two investigators must find out what's really going on.this is what it looks like Jurassic Park-It looks like a lot of fun. And if you want more mammoth-related reading, try my colleague Michael Le Page's excellent explanation of why they won't be coming back anytime soon.

mania Written by Lionel Shriver

The award-winning author we have to talk about kevin Reflecting her thoughts on the so-called “culture wars” in her fiction, she imagines a world where the “spiritual equality movement” is at its peak, and “the worst thing you can do is call someone 'stupid'.” There is.

This speculative novel alternates endlessly through the wilderness, with the same town to the east 20 years ahead of its time, and the same town to the west 20 years behind. Border crossings are only allowed on “memorial tours,'' which allow people to see the dead in towns where they are still alive. Odile, 16, will take a seat on the Conseil Commission, which can decide who can travel across borders. I love this sound.

Many may wonder if Marvel's superhero stories are really science fiction, but I'm leaning toward the multiverse aspect of this here and including it because it seems kind of interesting. This is the first installment in a new series that reimagines the origins of some of our biggest heroes. Here, Thor died defending Earth from Loki's pranks, and the Norse trickster god, exiled to our planet, is now dealing with the consequences.

the second book of eternal desert The series is set 500 years in the future. Ajungo's lie, which follows a junior peacekeeping force in the last remaining free city in the Eternal Desert, which has been under siege for centuries. It was actually released in March, but I missed it then, and science fiction contributor Sally Addy introduced it as a title to watch this year, so I'm introducing it now.

abnormality Written by Andrei Nikolaidis, translated by Will Firth

On New Year's Eve, the last year of humanity, various stories unfold, from a high-ranking minister with blood on his hands to a nurse with a secret. Later, in a cabin in the Alps, a musicologist and his daughter, the last people left on Earth, try to make sense of this catastrophe.according to independent personNicolaidis makes “Samuel Beckett look aggressively cheerful,'' and I admit that I sometimes want to see stories like that.

In this techno-thriller, Mal is a free AI, unconcerned with the conflicts going on between humans, but is trapped inside the body of a cyborg mercenary and is responsible for keeping the girl she died protecting. It will be.

topic:

Source: www.newscientist.com

Salmon farms are experiencing a growing problem of mass mortality

Posted on by
Reply

Salmon die from algae bloom at Norwegian farm

Berit Roald/EPA-EFE/Shutterstock

Since 2012, mass die-offs of farmed salmon have become more frequent and increasing in number, with some locations wiping out millions of fish at a time. These mass mortality events are often caused by stress factors such as fluctuations in ocean temperatures and poor living conditions, highlighting the need to improve animal welfare practices on salmon farms.

Approximately 70% of the salmon sold worldwide is farmed. There is a high mortality rate of fish before they are ready for slaughter, and there are serious concerns about the environmental impact of salmon farming and the welfare of farmed fish.

Six countries produce 92% of the world's farmed salmon: Norway, Canada, the United Kingdom, Chile, Australia, and New Zealand. Gerald Singh Researchers from the University of Victoria in Canada analyzed mortality data from these countries.

The researchers found that high-fatality events increased over time, particularly in Norway, Canada, and the United Kingdom, from 2012 to 2022. A total of 865 million salmon died during this period.

“We are talking about very large numbers,” Singh says. “In the case of Norway, the worst ranged from about 935,000 fish lost in a month to just under 5 million. In Canada, the worst 10 per cent disaster ranged from about 935,000 fish lost in a month to just under 5 million. Between 10,000 and 3.8 million fish were lost.”

If this trend continues, researchers predict that future fatal crashes could cause up to 5.14 million deaths in Norway, 5.05 million people in Canada and just over 1 million people in the UK.

Environmental stressors such as marine heatwaves and lack of oxygen in the water, as well as sea lice infestations, can trigger these mass die-offs. To reduce the impact of these stressors on salmon, Singh says better animal welfare practices need to be implemented, such as not overcrowding fish pens.

“These events can have significant impacts on local economies, communities and ecosystems,” he says. “For example, if communities that rely on these industries are stripped of their farming permits, this can have a significant impact on local economies and livelihoods.”

topic:

Source: www.newscientist.com