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CNRS


Mice individuality is influenced by their relations

Researchers study mice living in 'Souris City' device to identify distinct personalities based on behavior differences. The study reveals that dopamine-producing neurons play a key role in shaping individuality, with mice exhibiting radically different strategies for navigating the maze.

SourceCNRS·JournalNature Communications·DateAug 6, 2018

The bark side of the force

Researchers from CNRS and Cirad have discovered that the bark of certain tree species generates forces that control tree growth and upright posture. This motor function was previously overlooked, but is now recognized as a crucial component of a tree's ability to grow vertically.

SourceCNRS·JournalNew Phytologist·DateAug 6, 2018

CNRS congratulates Alessio Figalli, winner of the 2018 Fields Medal

Alessio Figalli, a CNRS researcher, has been awarded the 2018 Fields Medal for his groundbreaking contributions to calculus of variations, optimal control, and partial differential equations. His work focuses on optimal transport theory, which has far-reaching implications in fields such as economics, geometry, and probability.

SourceCNRS·DateAug 3, 2018

Largest king penguin colony has shrunk nearly 90 percent

The largest king penguin colony on Île aux Cochons has plummeted in size by nearly 90%, with researchers attributing the decline to climate change and vegetation encroachment. Satellite images reveal that the colony's population began declining in the late 1990s, coinciding with a major climatic event related to El Niño.

SourceCNRS·JournalAntarctic Science·DateJul 30, 2018

A molecular label: traceability for medical implants

Researchers have developed a molecular labeling method using polymers to identify biomedical implants, even after prolonged periods inside the living being. The technique uses mass spectrometry to decode the 'code' of the labels, enabling unambiguous identification and potential extension to other healthcare materials.

SourceCNRS·JournalAngewandte Chemie International Edition·DateJul 5, 2018

A new twist on how parasites invade host cells

Toxoplasmosis is a widespread infection caused by the parasite Toxoplasma gondii, which multiplies within a host and causes irreversible tissue damage. The parasite implements an ingenious invasive strategy involving a protein complex and rotational force to gain entry to host cells.

SourceCNRS·JournalCell Host & Microbe·DateJul 2, 2018

Asylum seekers are not a 'burden' for European economies

Economists estimate that asylum seekers have a positive impact on the economy of host countries after becoming permanent residents. The study analyzed 30 years of data from 15 Western European countries and found that an increase in migration flows produces positive effects on GDP per capita, unemployment rate, and public finances.

SourceCNRS·DateJun 20, 2018

Bees and the thought of naught

Researchers taught bees to recognize 'greater than' and 'less than' inequalities, and they successfully applied this knowledge to understand the concept of zero. This groundbreaking study reveals that even with a limited number of neurons, insects can grasp abstract mathematical concepts.

SourceCNRS·JournalScience·DateJun 8, 2018

The search for the origin of mast cells

Researchers from CNRS and INSERM identify 'primitive mast cells' generated in yolk sac during embryonic development. These cells play a crucial role in shaping the body's immune response, contradicting previous theories on mast cell origin.

SourceCNRS·JournalImmunity·DateJun 4, 2018

Aerial robot that can morph in flight

Researchers designed an aerial robot that can alter its profile during flight to reduce its wingspan and navigate through narrow passages. The Quad-Morphing robot has two rotating arms equipped with propellers, allowing it to fly like a helicopter and adopt different arm orientations to traverse tight spaces.

SourceCNRS·JournalSoft Robotics·DateMay 31, 2018

The survival of sea birds affected by ocean cycles

Researchers studied the effects of El Niño and Pacific decadal oscillation (PDO) on Nazca booby survival. Young birds face low survival rates during El Niño events due to depleted fish stocks, while adults experience higher mortality in warm PDO phases due to increased reproduction difficulties.

SourceCNRS·JournalEcology·DateMay 17, 2018

Why plants are so sensitive to gravity: The lowdown

Researchers discovered that plant statoliths exhibit fluid behavior due to molecular 'motors' stirring them about, enabling the detection of slightest gravity changes. This finding provides insight into what makes plants sensitive to gravity.

SourceCNRS·JournalProceedings of the National Academy of Sciences·DateMay 2, 2018

The laws of star formation challenged

Researchers challenged the existing understanding of star formation by observing a distant molecular cloud, W43-MM1, with ALMA. Contrary to previous findings, they discovered an overabundance of massive cores and underrepresentation of less massive cores.

SourceCNRS·JournalNature Astronomy·DateApr 30, 2018

Double trouble for a coral reef

Scientists find nearly 80% of coral reefs on Upolu Island have less than 10% cover, with recent coral death and smaller fish populations. Local human activities and climate change exacerbate the issue, while protected areas show signs of effective management.

SourceCNRS·JournalMarine Pollution Bulletin·DateApr 26, 2018

The dinosaur menu, as revealed by calcium

Researchers studied fossilized remains from Morocco and Niger to reconstruct the past's food chains, explaining how large predators coexisted. Calcium isotope analysis showed that carnivores shared resources by subtly hunting different prey types, such as herbivorous dinosaurs or fish.

SourceCNRS·DateApr 11, 2018

Eating less enables lemurs to live longer

A study on grey mouse lemurs found that chronic caloric restriction increased their median survival time to 9.6 years, compared to 6.4 years in control groups. Calorie restriction also delayed the onset of age-related pathologies and preserved motor capacities.

SourceCNRS·JournalCommunications Biology·DateApr 5, 2018

The great acceleration reaches new heights

A new study reveals that biodiversity on mountain peaks in Europe is increasing at an accelerated rate, with plants colonizing higher altitudes in response to warmer temperatures. This trend suggests a risk of disrupting mountain ecosystems as certain species may not be able to adapt to changing conditions.

SourceCNRS·JournalNature·DateApr 4, 2018

Artificial molecules that mimic DNA

Artificial molecules mimicking DNA's surface features have been successfully synthesized, demonstrating the ability to inhibit activity of several DNA-binding enzymes. These findings pave the way for new medicines by inhibiting DNA-protein interactions.

SourceCNRS·JournalNature Chemistry·DateApr 3, 2018

Polymers that mimic chameleon skin

Researchers have developed a biocompatible synthetic material that replicates tissue mechanics and alters color when it changes shape, like chameleon skin. The material is composed of a unique triblock copolymer with carefully selected structural parameters, exhibiting flexibility, strain profile, and optical properties.

SourceCNRS·JournalScience·DateMar 29, 2018

How to make a good impression when saying hello

A computer program called CLEESE enables researchers to visualize the mental representations of others' personalities according to acoustic qualities of their voices. The study found that a descending pitch with emphasis on the second syllable makes a hello sound sincere, while a rising pitch inspires trust.

SourceCNRS·JournalProceedings of the National Academy of Sciences·DateMar 26, 2018

How allergens trigger asthma attacks

A team of scientists has identified a human protein called interleukin-33 (IL-33) that reacts to various environmental allergens, including mold, pollen, and cockroaches. This discovery establishes a direct link between genetics and the environment, and offers new potential targets for treatment of allergic diseases.

SourceCNRS·JournalNature Immunology·DateMar 19, 2018

In the eye of the medulloblastoma

Researchers from CNRS and St. Jude Children's Research Hospital have identified a gene cluster involved in medulloblastoma tumour development. They found that genes normally expressed only in the eye can be activated in brain tumors, promoting cell proliferation and inhibiting cell death.

SourceCNRS·JournalCancer Cell·DateMar 12, 2018

Why is it so hot at night in some cities?

Urban heat islands are caused by cities trapping more heat than surrounding areas due to their structure, affecting energy consumption and air quality. Researchers studied 50 cities and found that well-organized cities with straight streets retain more heat at night, leading to increased energy bills in hot climates.

SourceCNRS·JournalPhysical Review Letters·DateMar 12, 2018

A new solution for chronic pain

Researchers uncover mechanism behind neuropathic pain and develop innovative treatment blocking FLT3 molecule. The treatment shows immediate and long-lasting therapeutic effects in animal subjects, reducing hyperalgesia and allodynia.

SourceCNRS·JournalNature Communications·DateMar 12, 2018

Comet Chury formed by a catastrophic collision

A team of researchers proposes a new scenario for the formation of Comet Chury, suggesting it formed through a gentle encounter between two comets, preserving its primordial composition. This process allows for the survival of small bodies like Chury, which would otherwise be destroyed by collisions in the regions where they orbit.

SourceCNRS·JournalNature Astronomy·DateMar 6, 2018

Crowdlending: Anatomy of a successful strategy

A crowdlending pioneer developed a successful strategy by creating a niche market and collaborating with regulatory bodies. He achieved this through a 'coopetition' approach, combining competition and cooperation to bypass the banking monopoly and establish new regulations.

SourceCNRS·JournalAnnales des Mines - Gérer et comprendre·DateMar 1, 2018

Unsaddling old theory on origin of horses

A study of 20 ancient horses found they are direct ancestors of Przewalski's horses, contrary to previous thought. Their return to a wild state led to changes such as the loss of leopard spotting and night blindness.

SourceCNRS·JournalScience·DateFeb 22, 2018

Towards a better prediction of solar eruptions

Scientists identified a confining 'cage' in which a magnetic rope forms, causing solar eruptions. The resistance of this cage determines the power and type of flare. A new model predicts maximum energy release during solar flares, potentially devastating for Earth's systems.

SourceCNRS·JournalNature·DateFeb 7, 2018

Robots aid better understanding of phytoplankton blooms

Researchers have developed biogeochemical profiling floats to collect data on phytoplankton blooms, identifying the starting point for explosive spring blooms. These robots provide unparalleled data on ocean conditions, including light intensity, suspended particles, and chlorophyll concentration.

SourceCNRS·JournalNature Communications·DateJan 15, 2018

Discovery of a 4,000-year-old military network in northern Syria

Archaeologists have uncovered a vast, structured surveillance and communication network dating back to the Middle Bronze Age in northern Syria. The network, comprising fortresses, small forts, towers, and enclosures, stretched across approximately 7,000 km2 and was designed to protect urban areas and transport corridors.

SourceCNRS·DateDec 21, 2017

Bronze Age artifacts used meteoric iron

Recent research reveals that all Bronze Age iron artifacts were made from meteoric iron, a rare and valuable source of the metal. This finding challenges previous theories on the origins of bronze and provides new insights into ancient metalworking practices.

SourceCNRS·JournalJournal of Archaeological Science·DateDec 4, 2017

Towards better understanding of railway ballast

Researchers from CNRS and INSA Strasbourg propose a new mechanism to explain lower-than-predicted vibrations near tracks as train speed increases. They show that a large part of energy is trapped in the heterogeneous ballast layer, leading to accelerated degradation.

SourceCNRS·JournalComputational Mechanics·DateNov 22, 2017

Modeling social interactions to improve collective decision-making

Researchers analyzed social interactions in France and Japan, identifying five behaviors that influence group decisions. They developed a mathematical model that reproduces the results and predicts group performance based on information exchange, which can lead to improved cooperation and collaboration.

SourceCNRS·JournalProceedings of the National Academy of Sciences·DateNov 7, 2017