Saturday, June 28, 2025

Polaris of Enlightenment

High levels of PFAS in European wines

Published 25 April 2025
– By Editorial Staff
All the wines tested contained high levels of the PFAS substance TFA.
2 minute read

A new study shows that European wine contains PFAS levels up to a thousand times higher than tap water, with some of the most contaminated bottles ranking among the top sellers.

In a collaboration with various European environmental organizations within the Pesticide Action Network Europe (PAN Europe), which includes the Swedish Society for Nature Conservation, 49 different red and white wines have been analyzed for PFAS.

The results show that all the wines tested contain high levels of the PFAS substance TFA. The presence of TFA has increased at a record rate in recent years, but wines from 1988 and earlier contain nothing of the substance, while the levels have exploded from 2020 onwards. These wines contain between 21 000 and 320 000 nanograms of TFA per liter.

The grapes are likely to have been contaminated via the water they were watered with, but also from PFAS pesticides. This is a clear example of how our food is affected when PFAS is spread in nature, said Karin Lexén, Secretary General of the Swedish Society for Nature Conservation, in a press release.

One of the worst wines with high levels of TFAs is Systembolaget’s best-selling bottled red wine, the French Grand Sud Merlot. The wine contains 220,000 nanograms of TFA per liter, which is about a thousand times more than the Swedish tap water tested by the Swedish Society for Nature Conservation last year.

This shows what PFAS emissions lead to and how widespread the spread is. We have a PFAS crisis and these harmful substances that never break down in nature are seeping into more and more of our food – even wine, says Lexén.

Facts: TFA

Trifluoroacetic acid is a chemical used in the manufacture of pharmaceuticals and pesticides, among others. It belongs to the PFAS family and is very difficult to break down in nature. TFA can be formed as a breakdown product of other fluorinated substances and is easily dispersed in water, making it problematic for the environment.

TFAs are harmful to aquatic organisms and are being investigated for adverse effects on fetal development. However, there is no EU-wide limit for TFA, although the Netherlands has introduced a national limit of 2 200 nanograms per liter for drinking water.

Source: Naturskyddsföreningen

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EU classifies mink as invasive

Biodiversity

Published 25 June 2025
– By Editorial Staff
Minks threaten biodiversity by preying on birds, amphibians and small mammals, causing great damage to sensitive ecosystems.
2 minute read

The EU’s list of invasive alien species has been updated – mink is now included. However, Finland plans to apply for an exemption to continue fur farming.

The European Union has updated its list of alien species that threaten biodiversity. The species on the list are banned from being imported, sold, bred, cultivated or used within the EU. One of the most notable new additions is the mink – a decision that is causing concern in the Finnish fur industry, which has been heavily criticised in many quarters.

Invasive species are animals and plants that spread to new areas and cause ecological imbalance. They can outcompete native species and cause significant damage to ecosystems. The EU list is intended as a tool to limit their spread and protect biodiversity.

The inclusion of mink in the ban could deal a severe blow to Finland’s controversial fur farms, but Finland hopes to obtain an exemption, as it did in 2017 when the raccoon dog was added to the list.

– The assessment is that Finland is likely to be granted an exemption, says Karin Cederlöf, government secretary at the Ministry of Agriculture and Forestry.

North American beaver displacing European variety

If the exemption is approved, mink farming could continue in the country, but under stricter safety requirements. However, no new farms would be allowed to be established.

Finland is now preparing an official request to the EU for an exemption for mink. The government and parliament have given the go-ahead, and work will start immediately after the summer break.

In addition to mink, the North American beaver has also been added to the list. Finland has already taken measures to reduce the spread of the disease in order to protect the endangered European beaver. These efforts will now be further intensified, according to Cederlöf.

Several new bird and fish species as well as plants are also covered by the rules. Among mammals, in addition to mink, sika deer is also among the newly added species.

The EU’s work against invasive species is usually described as a central part of the Union’s environmental strategy, and the list is updated regularly as new threats are identified. For Finland, the decisions represent a delicate balance between nature conservation and economic interests – and the exemption for mink could be decisive for the future of the fur industry.

Chimpanzees caught on camera sharing alcoholic fruit

Published 14 June 2025
– By Editorial Staff
2 minute read

For the first time, wild chimpanzees have been documented eating and sharing fruit containing alcohol. The research team speculates that this behavior could be described as an early evolutionary stage of “feasting”.

Researchers from the University of Exeter in England set up ten separate cameras with motion sensors in a national park in Guinea-Bissau in West Africa. There, they captured chimpanzees sharing the fermented fruit Treculia africana. The fruit contained an alcohol content of up to 0.61 percent. The behavior raises questions about whether and why chimpanzees consciously seek out alcohol.

– For humans, we know that drinking alcohol leads to a release of dopamine and endorphins, and resulting feelings of happiness and relaxation, said Anna Bowland, one of the researchers behind the study, in a press release, continuing:

We also know that sharing alcohol – including through traditions such as feasting – helps to form and strengthen social bonds. So – now we know that wild chimpanzees are eating and sharing ethanolic fruits – the question is: could they be getting similar benefits?

The amount observed is probably not enough to get the chimpanzees drunk, but the researchers estimate that the filmed episodes only provide a small glimpse into how much fermented fruit the animals eat in a day, as their diet consists of 60-85 percent fruit.

Researchers believe that more research is needed into why chimpanzees eat fermented fruit together, but speculate that the behavior may represent an early evolutionary stage of “feasting”.

Chimps don’t share food all the time, so this behaviour with fermented fruit might be important, says Dr. Kimberley Hockings of the University of Exeter. “If so, it suggests the human tradition of feasting may have its origins deep in our evolutionary history”.

Bats “surf” the winds to power their migration

Published 7 June 2025
– By Editorial Staff
2 minute read

Bats use the warm fronts of storms to “surf” as they migrate, research shows. This way, they use less energy and can fly longer distances.

The greater noctule bat is Sweden’s largest bat species, with a wingspan of 30 to 45 centimeters. The species also lives in Finland. Like birds, bats migrate thousands of kilometers annually across North America, Europe, and Africa. Now, researchers from the Max Planck Institute of Animal Behavior (MPI-AB) have studied 71 greater noctule bats during their approximately 1,600-kilometer-long spring migration across the European continent. Using sensors, the researchers were able to measure the bats’ activity levels as well as the air temperatures in which they were flying.

The researchers discovered that the bats often paused during their flights but could travel as far as 400 kilometers in a single night breaking the previous distance record for the species. The bats interrupted their migration flights with frequent stops, likely because they needed to feed continuously.

– Unlike migratory birds, bats don’t gain weight in preparation for migration, explains Dina Dechmann of MPI-AB, one of the authors of the study, in a press release. They need to refuel every night, so their migration has a hopping pattern rather than a straight shot.

Furthermore, an interesting pattern emerged in the bats’ migration. On some nights, more bats chose to fly than on others, which turned out to be weather-dependent. The bats began flying on nights when air pressure dropped and temperatures rose in other words, when storms were approaching. The sensors on the transmitters measuring activity levels also showed that the bats used less energy when flying on these warm, windy nights. After further analysis, it became clear that the bats were using the warm winds during storms to “surf”.

– They were riding storm fronts, using the support of warm tailwinds, says Edward Hurme, a researcher at MPI-AB. It was known that birds use wind support during migration, and now we see that bats do too.

The results of the study are important for the survival of bats, say researchers. Migrating bats are threatened by human activities, especially wind turbines which cause many collisions. Knowing where and when bats migrate can help prevent deaths.

– We can be stewards of bats, helping wind farms to turn off their turbines on nights when bats are streaming through, says Hurme.

Swedes earn money clearing invasive species

Biodiversity

Published 28 May 2025
– By Editorial Staff
Large-leaved lupines are beautiful - but highly invasive.
1 minute read

Through a mobile game, individuals can “play” by heading out into nature, removing invasive plants, and even getting paid for their efforts. This year, seven Swedish municipalities are testing the game.

The Crowdsorsa mobile game has been used in Finland for three consecutive years, where last year it removed invasive plants from 7000 observations. It is also available in Canada.

This year, the municipalities of Hagfors, Örebro, Sunne, Karlsborg, Lilla Edet, Tanum and Falun are trying it out. The idea is that individuals find invasive plants, either via the map in the app or by themselves, remove them and get paid. As proof, they must film before and after clearing.

The total budget for this year in Sweden is SEK 126,000 (€11,600), which individuals can “play” for. At most, you can earn SEK 200 (€18.5) per hour, with the municipality responsible for paying out the reward.

“Fun way to work”

Last year, it was also successfully used in Hagfors and Örebro. In Hagfors, a total of 17 different teams played.

– The players did a great job! We think it’s a fun way to work with invasive alien species and an effective way to reach the public – and especially young people – with knowledge about invasive species, says municipal ecologist Katarina Karlsson in Hagfors municipality to Natursidan.

Invasive species often spread quickly and can displace native species, which in turn can damage the ecosystem. The game starts already in June, where, among other things, large-leaved lupine, Himalayan balsam and Canadian goldenrod will be removed.

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