Friday, August 15, 2025

Polaris of Enlightenment

Europeans choose animal welfare over “climate concerns”

Published 30 October 2023
– By Editorial Staff
2 minute read

Consumers in Germany, Denmark, and the United Kingdom place a higher value on animal welfare than on low carbon emissions when it comes to the prices of pork, according to a new study at the University of Copenhagen.

In China, food safety is the highest priority for consumers to accept paying a higher price.

Through a questionnaire, participants from Denmark, Germany, the UK, and China answered questions about sustainability factors in the pork industry. In total, about 1,500 people from each country participated.

Participants were tasked with prioritizing which factors were more important than others in the pork industry, in other words, what they would prefer to pay more for. The factors to choose from were animal welfare, so-called “carbon footprint” (carbon emissions), use of antibiotics, food safety, and protection of rainforests.

In the study, which was published in the scientific journal Livestock Science, it was observed that about 75% of participants from Germany, Denmark, and China would generally pay more for all five factors. In the UK, the figure was 60%.

When participants were asked to choose, they prioritized other factors over lower carbon emissions. In Denmark, China, and the UK, “climate impact” ranked second to last on the list, after protection of rainforests and food safety respectively. In Germany, the carbon aspect was at the bottom of the priority list.

“Not what consumers care most about”

In light of how much climate has occupied public debate in recent years, we were surprised that bringing down the climate footprint was given such a relatively low priority among consumers, says Thomas Bøker Lund at the University of Copenhagen, in a press release.

In Western countries, animal welfare stood at the top of the list of factors consumers would prefer to pay more for. In China, the priority was food safety. The researchers concluded that labeling meat as “climate-friendly” wouldn’t change this.

– The answers clearly demonstrate that focusing solely on climate improvements in pork production is not what consumers care most about when buying pork. They see it as important that pigs have had a good life, and that this is more important than climate-friendly production, says Professor Peter Sandøe.

Researcher: “Climate considerations” clash with animal welfare

Furthermore, the researchers highlight that minimizing carbon emissions can directly conflict with ensuring animal welfare.

– It’s a real dilemma that maximizing climate friendliness may require pushing animals on a number of other fronts. For example, the breeding of sows that give birth to more and more piglets per litter or to keep animals indoors so as to sequester more direct emissions than if they were to roam outdoors. Or to feed pigs finely ground feed, so that nothing goes to waste, but which gives them stomach ulcers, Sandøe points out as examples.

– Conversely, the kinder one is with the animals, the greater the climate impact per kilo of meat, he summarizes.

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Radioactive method ready for use against poaching

Biodiversity

Published 11 August 2025
– By Editorial Staff
Rhinos are being injected with radioactive material.
2 minute read

After an extended testing period, the Rhisotope project in South Africa is now in full operation. The technology, which makes rhino horns both traceable and unattractive to poachers, can now be used on a large scale.

It was in June last year that researchers injected radioactive material into the horns of 20 rhinos in South Africa. The project, called the Rhisotope Project and led by the University of the Witwatersrand (Wits University) in South Africa, began six years ago with the idea of stopping poaching of the endangered rhinos. The concept was that the radioactive material should be detectable at border controls, but also becomes toxic to consume. Furthermore, the radioactive material should be harmless to the rhinos.

Now the project has been thoroughly tested and reached full operational status, writes Wits University in a press release.

We have demonstrated, beyond scientific doubt, that the process is completely safe for the animal and effective in making the horn detectable through international customs nuclear security systems, says James Larkin, professor at Wits University and scientific director of the Rhisotope Project.

Sold as “medicine”

Rhino poaching is a recurring problem, particularly in South Africa. Last year, 420 rhinos were killed illegally in the country, where the horns often end up on the black market. They are often sold as medicine and can be worth more than gold. The treatment is carried out by sedating the rhino and then drilling a small hole in its horn. Two small isotopes with radioactive material are then inserted.

This means in practice that private and public rhino owners, non-governmental organizations and conservation authorities can contact the Rhisotope Project to treat their rhinos with the radioactive material.

Our goal is to deploy the Rhisotope technology at scale to help protect one of Africa’s most iconic and threatened species. By doing so, we safeguard not just rhinos but a vital part of our natural heritage, says Jessica Babich, CEO of the Rhisotope Project.

Swedish crayfish threatened with extinction

Biodiversity

Published 10 August 2025
– By Editorial Staff
From 30,000 population to under 600 – the noble crayfish is critically endangered.
2 minute read

Crayfish plague continues to devastate Sweden’s native noble crayfish. In just a few decades, populations have plummeted from around 30,000 to fewer than 600 – and the trend continues downward.

The biggest culprit is illegal releases of non-native signal crayfish, which are themselves heavily fished and can also be affected by the disease.

The signal crayfish, which spreads the disease, has increased dramatically and today exists in between 10,000 and 15,000 populations. In Värmland, a province in western Sweden, illegal releases have been documented in as many as 239 bodies of water between 2000 and 2024.

— Noble crayfish populations in Värmland and Dalsland were 430 in the early 2000s; today only 60 remain, says Lennart Edsman, crayfish expert and researcher at the Freshwater Laboratory at the Swedish University of Agricultural Sciences (SLU), to Swedish news agency TT.

When August and crayfish season arrives, the question arises of which species the environmentally conscious consumer should choose for their crayfish party.

— You should eat noble crayfish if you can afford it. That gives them value that makes them worth protecting. And you should eat signal crayfish too, but absolutely not spread them, Edsman believes.

Imports worth hundreds of millions

Swedes eat far more crayfish than the country can produce. Between 70 and 80 percent of the crayfish on tables are imported. In 2023, imports amounted to a value of €40 million, while Swedish crayfish were sold for €27 million.

Previously, the largest portion of imports came from China, but today Spain, Turkey and also Egypt dominate the Swedish market.

Most Swedish-caught crayfish are signal crayfish, with a large share coming from lakes Vättern and Hjälmaren in central Sweden. Recently, however, many consumers have complained that the crayfish have become smaller.

— This is partly because fishing has been too intensive. There is great demand for crayfish in this country. Sweden is quite extreme when it comes to crayfish consumption, Edsman explains.

The signal crayfish originates from western North America, as does crayfish plague – a parasitic algae fungus. Although the species is more resistant than the noble crayfish, it is not immune to the disease.

How the signal crayfish took over

The signal crayfish originally comes from western North America and was introduced to Sweden in the 1960s as a way to replace the noble crayfish, which had been severely affected by crayfish plague at the time. The idea was to preserve crayfish fishing and its economic benefits, since the signal crayfish is more resistant to the disease than the noble crayfish.

The problem is that the signal crayfish carries the very crayfish plague – a parasitic water mold – that is deadly to the noble crayfish. Although the invasive species itself can be affected, it is significantly more resilient, which means it functions as a disease carrier and accelerates the decline of the noble crayfish.

Since its introduction, the signal crayfish has spread rapidly and is now found in between 10,000 and 15,000 populations across Sweden. Many of these have resulted from illegal releases. The consequence is that the noble crayfish has declined from around 30,000 populations to fewer than 600 throughout the country.

New giant insect discovered in Australia

Biodiversity

Published 5 August 2025
– By Editorial Staff
Acrophylla alta lives in a very limited area of high-altitude rainforest.
2 minute read

Researchers have discovered a new species of stick insect. The insect, which can grow to almost half a meter long, is said to potentially be Australia’s heaviest.

It was at high altitude in the Atherton Tablelands in northern Queensland, Australia, that the stick insect was found. Researchers at James Cook University helped identify the new species, which they call Acrophylla alta. The most remarkable thing about the insect is its length and especially its weight: It can grow 40 centimeters long and weigh about 44 grams, which is slightly less than the weight of a golf ball.

There are longer stick insects out there [in the region], but they’re fairly light bodied, says Professor Angus Emmott in a press release. From what we know to date, this is Australia’s heaviest insect.

It was through the eggs that researchers were able to identify that it was a new species, since no species of stick insects have identical eggs.

They’ve all got different surfaces and different textures and pitting, and they can be different shapes, he says.

It is not uncommon for new insect species to be discovered, but the reason this heavy insect has gone unnoticed is likely due to its habitat. These insects live in a limited area of high-altitude rainforest and live high up in the tree canopy. Emmott also believes it is precisely their living environment that has made them so large.

It’s a cool, wet environment where they live, he says. Their body mass likely helps them survive the colder conditions, and that’s why they’ve developed into this large insect over millions of years.

Protect yourself from horseflies this summer

Published 29 July 2025
– By Editorial Staff
Horsefly: Tiny body, big summer nuisance
2 minute read

Bites from horseflies can both hurt and cause allergic reactions. Here’s what you can do to avoid being bitten.

In the Nordic countries, parts of the summer have offered warm and humid weather, which means a delight for the summer pest horsefly to thrive in. Summer is not yet over and neither is the risk of being bitten by a horsefly.

Horseflies, also called clegs, don’t bite by stinging like mosquitoes, but cut open the skin with their mouthparts, which makes the bites more painful. Only females suck blood, which they need to develop their eggs. Males, however, are harmless and feed on nectar and pollen, making them pollinators.

The summer pest often stays near water, in pastures or by stables and mainly during daytime when the sun is shining.

Treat bites

Bites can cause symptoms such as swelling, itching and even allergic reactions. Often it’s not a major danger, but more an irritating element after a day at the beach. However, if you want to be on the safe side, you can clean the bite. If you’re very bothered by the bite, you can relieve it by dabbing with an aloe vera product or applying a local anesthetic ointment. For severe reactions, it can also be good to take antihistamines.

Don’t look like a flower

To avoid being bitten by horseflies, it can be advantageous to neither smell like nor look like a flower, writes Land.se (a Swedish agricultural publication). That is, avoid both colorful clothes and perfume. If you see a horsefly swarm, it’s best to be still and quiet, so maybe it will pass by. Horseflies are also attracted to sweat, something that’s harder to avoid in the heat. Mosquito repellent can to some extent help against being bitten.

Food also attracts horseflies, so you can for example cover the food before eating if dinner is to be consumed outdoors.

Don’t panic

If you happen to end up in a swarm of horseflies, it’s best not to panic. Keep your mouth closed, otherwise there’s a risk of being bitten in the mouth, and it can also be good to close your eyes – but a tip is to take in the surroundings first so you don’t stumble into a tree.

Then you should move slowly away from the swarm, with your arms as still as possible.

Think about your clothes

Avoid loose-fitting clothes since the horsefly can accidentally get caught between the fabric and body, which of course risks bites. Going barefoot should also be avoided. Preferably you should have full-coverage clothing if you want to be more certain not to be bitten, which also means having something on your feet – barefoot in the grass is therefore not a good idea.

It’s better to dress light and matte, than dark and shiny. Especially black and blue are colors that horseflies are attracted to.

Fact: Horse flies

Horse flies are large, blood-sucking flies that belong to the family Tabanidae and are found throughout Sweden, particularly during warm summer months. The country has around 45 species distributed across several genera.

This summer pest is recognizable by its robust body structure, large eyes and patterned or spotted wings. Body length varies between 6 and 25 millimeters depending on species.

Among the most common species in Sweden are the deer fly (Chrysops relictus), which is silent and fast, the notch-horned cleg fly (Haematopota pluvialis), which thrives in the northern parts of the country, and the pale giant horse-fly (Tabanus bovinus), one of the largest and most aggressive.

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