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University of Helsinki


Climate change won’t simply shrink marine life

A global study of over 23,000 marine mollusk species found that body size is projected to decline in most ocean regions by 2100, but some groups will grow larger. Researchers analyzed temperature, oxygen, and ocean productivity to predict changes in five major groups of mollusks.

SourceUniversity of Helsinki·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateSep 3, 2026

When biology inspires mathematics: new discovery explains why a widely used evolutionary method can give false answers

Scientists identify previously unrecognized mathematical property explaining why widely used evolutionary statistical models can produce convincing but incorrect conclusions. A new decomposition of Markov models revealed hidden symmetries, allowing researchers to answer long-standing questions about species diversity.

SourceUniversity of Helsinki·JournalNature Communications·DateSep 3, 2026

Aggressive breast cancer sets a trap for itself – and that is just where researchers intend to strike

A University of Helsinki research group has discovered a weakness in aggressive breast cancer cells that can be exploited, targeting the MYC protein's metabolic grip. By inhibiting energy production and glutamine uptake, researchers were able to slow breast cancer growth in mice, paving the way for new and personalised treatments.

SourceUniversity of Helsinki·JournalCell Reports·TypeExperimental study·DateAug 28, 2026

Online marketplaces are putting biodiversity at risk

A new study highlights the urgent need for concerted strategies to combat online illegal wildlife trade, which is magnified by the anonymity of online platforms. The review identifies critical gaps in data and emphasizes the need for cooperation across sectors and comprehensive policy frameworks to address this growing threat.

SourceUniversity of Helsinki·JournalNature Reviews Biodiversity·DateAug 24, 2026

Giant crocodylians dominated the food chain in Miocene South America

In the Miocene era, giant crocodylians were the most significant predators in South America's habitats, feeding on a wide range of herbivores. Their presence likely influenced the size of herbivore populations, with even the largest predators, such as the 1,800-kilogram Purussaurus neivensis, playing a crucial role.

SourceUniversity of Helsinki·JournalJournal of Vertebrate Paleontology·TypeObservational study·DateAug 16, 2026

Early snakes explored life underground, on land and at sea

A new study reveals that early snakes experimented with multiple habitats and sensory strategies before evolving into modern species. The research describes the discovery of a well-preserved fossil snake skeleton from the Late Cretaceous period, which provides insights into the early neuroanatomy and ecological diversity of snakes.

SourceUniversity of Helsinki·JournalNature·TypeComputational simulation/modeling·DateAug 3, 2026

The evolution of individual species can shape entire species communities

A study by the University of Helsinki found that the evolution of a single species can drastically change the composition of an entire microbial community. By analyzing the changes in bacterial genomes and species composition over four years, researchers discovered that one species' mutation led to a shift in the community's dynamics.

SourceUniversity of Helsinki·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJun 9, 2026

The first domesticated horses: 6,000 years of a complex story

New research reveals that humans used horses in organized ways as early as the 4th millennium BCE, challenging the accepted timeline of full domestication. The study's findings suggest a more complex and nuanced history of human-horse relationships, highlighting the significant impact of horses on major historical developments.

SourceUniversity of Helsinki·JournalScience Advance·TypeSystematic review·DateMay 13, 2026

Nature draws more tourists to the Canary Islands than previously believed

A social media analysis by the University of Helsinki reveals that nature has an important role to play in tourism beyond the beaches, with 25% of photos taken in conservation areas and a third in natural settings. This finding suggests that Central and Southern Europeans tend to focus more on nature than British or Nordic visitors.

SourceUniversity of Helsinki·JournalPeople and Nature·TypeData/statistical analysis·DateMay 6, 2026

Effective cholesterol absorption from the intestine may increase the risk of serious cardiac events

Researchers found that high cholesterol absorption from the intestine increases the risk of myocardial infarctions and cardiac mortality in patients with a history of acute coronary artery events. Individuals with exceptional cholesterol absorption efficiency, which is present in about one-third of the population, are at a higher risk.

SourceUniversity of Helsinki·JournalJournal of Internal Medicine·DateApr 15, 2026

Earlier ADHD diagnosis linked to better education

A new study from Finland found that receiving an ADHD diagnosis earlier is associated with better academic performance and lower school dropout rates. Young people diagnosed earlier had a higher grade point average at age 16 and were more likely to pursue academic degrees.

SourceUniversity of Helsinki·JournalJAMA Psychiatry·TypeData/statistical analysis·DateApr 9, 2026

Human attitudes to predators shape prospects for coexistence

A recent study by Miquel Torrents-Ticó found that human attitudes play a crucial role in determining predator populations. In two Kenyan sites, human tolerance influenced spotted hyena distribution, with tolerated herders allowing predators to thrive. The findings suggest that coexistence is more likely when humans accept predators.

SourceUniversity of Helsinki·JournalJournal for Nature Conservation·TypeObservational study·DateApr 1, 2026

A new link between the 'power stations' of plants

A new study reveals how plant mitochondria interact with chloroplasts to regulate oxygen levels, affecting photosynthesis and stress responses. This discovery sheds light on plant metabolism and energy management, offering potential insights into crop development and stress detection.

SourceUniversity of Helsinki·JournalPLANT PHYSIOLOGY·TypeNews article·DateMar 2, 2026

REM sleep supports equine motivation and learning

A recent study at the University of Helsinki found that short periods of REM sleep impair horses' perseverance and performance in demanding learning tasks. Horses with longer REM sleep duration performed better in a reverse learning test, suggesting that REM sleep is associated with motivation and perseverance.

SourceUniversity of Helsinki·JournalScientific Reports·DateFeb 17, 2026

Childhood exposure to air pollution linked to poorer cognitive performance in later life

A new study reveals that childhood exposure to indoor air pollution from solid fuels may impair brain health and cognitive abilities throughout life. The research analysed data from over 7,000 Chinese adults aged 45 and above, showing a significant association between early-life exposure and poorer cognitive performance in adulthood.

SourceUniversity of Helsinki·JournalSocial Science & Medicine·TypeData/statistical analysis·DateJan 12, 2026

Thinning turned an upland forest into a temporary carbon source and made a peatland forest an even stronger carbon source

Research at the University of Helsinki reveals that forest thinning can temporarily boost carbon storage in upland forests, while drained peatlands become stronger net carbon sources due to slower tree growth and increased decomposition. The study highlights the importance of adapting management practices to different forest types.

SourceUniversity of Helsinki·JournalForest Ecology and Management·DateNov 5, 2025

How tiny teeth reveal big evolutionary secrets

Researchers found vole teeth evolved from simple changes in tooth growth over six million years, making them excellent grass-eaters during ice ages. This discovery sheds light on how development steers species adaptation and informs conservation efforts.

SourceUniversity of Helsinki·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateOct 8, 2025