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Sandra Lavorel, winner of the 2023 CNRS Gold Medal, surrounded by the equipment in the Warm project, which is studying the effect of climate change on alpine grasslands.

Sandra Lavorel, winner of the 2023 CNRS Gold Medal, surrounded by the equipment in the Warm project, which is studying the effect of climate change on alpine grasslands.

© Hubert Raguet / LECA / CNRS Images

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Dans ce tout premier épisode de #VaSavoir, Maxime part à la rencontre des serpents avec Xavier Bonnet et son équipe du Centre d'études biologiques de Chizé (@CNRS/La Rochelle Université). Xavier Bonnet étudie les serpents depuis plus de 30 ans et est l'un des herpétologues français les plus reconnus. L'occasion rêvée de se demander s'il est bien raisonnable d'en avoir peur, mais aussi d'essayer de comprendre les mécanismes étranges de l'évolution et la nécessité de laisser de la place…

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Dans les hauteurs du Népal, les bergers élèvent le yack pour son lait, sa viande et sa laine. Des anthropologues et des éthologues étudient leurs stratégies pour garder leurs troupeaux groupés et faire face au retour de la panthère des neiges, prédateur redouté et espèce protégée.

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It is a unique tool for studying corals and marine ecosystems. In this report, navigate the lagoons of French Polynesia aboard a scientific vessel, a ship-laboratory developed by scientists from the CRIOBE research centre, in Moorea.

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Portrait de Nicolas Galtier, lauréat de la Médaille d'Argent 2019 du CNRS. Chercheur en biologie évolutive à l'Institut des sciences de l'évolution (DR13), spécialisé dans l'évolution des génomes via les modèles de la génétique des populations et de la phylogénie.

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Puits de Science, la série YouTube du CNRS, présentée par un René Descartes et un Charles Darwin en deux dimensions, apporte des éléments de réponse à des questions scientifiques grand public. Pour ce faire, nos deux présentateurs interrogent des chercheurs directement par Skype et invitent à l'occasion d'autres figures historiques de la science. Épisode 3 : Comment expliquer la différence de morphologie des êtres vivants ? Les sciences de la vie ne sont plus les seules à…

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Forty-five million years ago, cetaceans lived on land. Adapting to the marine element over the centuries, they have nevertheless kept from their distant past certain behavioural, physiological and sensory abilities that differentiate them from other aquatic species. Off the coast of Spain, a team of researchers is studying a group of pilot whales to demonstrate that these animals have a sense of taste and smell and use them every day to communicate and feed. The outcome of this work would…

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Pas de cession par extrait

Forty-five million years ago, cetaceans lived on land. Adapting to the marine element over the centuries, they have nevertheless kept from their distant past certain behavioural, physiological and sensory abilities that differentiate them from other aquatic species. Off the coast of Spain, a team of researchers is studying a group of pilot whales to demonstrate that these animals have a sense of taste and smell and use them every day to communicate and feed. The outcome of this work would…

Only available for non-commercial distribution

Pas de cession par extrait

The Youtube channel Zeste de science explores all aspects of scientific research, proving that even the most complicated scientific facts can be explained in less than 5 minutes, and that even the most seemingly trivial events of everyday life, if thoroughly studied, can contribute to the biggest technological advances. Episode 23: A team of researchers compared the physical features of a population of Caribbean lizards before and after the passage of…

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Pas de cession par extrait

The Youtube channel Zeste de science explores all aspects of scientific research, proving that even the most complicated scientific facts can be explained in less than 5 minutes, and that even the most seemingly trivial events of everyday life, if thoroughly studied, can contribute to the biggest technological advances. Episode 5: The evolutionary history of cetaceans turns out to be more complicated than it first seemed. Whales are now sensitive to ultrasonic and infrasonic sounds, but…

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In French Guiana, leatherback turtles—the largest sea turtles in the world—return to the same beach multiple times over the year to lay their eggs. But fewer are making it back, threatening the species with extinction. Researchers have been tracking and monitoring them to better understand the increasing anthropogenic and environmental pressures on their ecosystem.

About 70.8 % of the Earth's surface is covered by oceans. This huge reservoir of biodiversity is home to millions of species. Three researchers, Gilles Le Boeuf, Nadine Le Bris and Nathalie Niquil, explain the impacts of climate change on the marine environment. The multiple alterations caused by humans weaken ocean ecosystems and undermine their role as natural climate regulators. These far-reaching changes, which affect the abundance and diversity of marine species, have an impact on the…

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Since 2004, the yellow-legged hornet—also known as Asian hornet—has been spreading throughout Europe at an alarming rate. How can we get rid of this invasive species without killing other insects? The key is in finding the perfect trap...

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Metatron is a unique experimental instrument in the world. Located at the CNRS Experimental Ecology Station in Moulis in the Ariège department, France, it is used to investigate the evolution of species in response to climate change. Jean Clobert, the station's director, and several of its researchers explain the experiments currently carried out in this research centre. Established in an estate of some 10 acres, it includes 48 cages of about 120 sq. yards each, which are…

Metatron is a unique experimental instrument in the world. Located at the CNRS Experimental Ecology Station in Moulis in the Ariège department, France, it is used to investigate the evolution of species in response to climate change. Jean Clobert, the station's director, and several of its researchers explain the experiments currently carried out in this research centre. Established in an estate of some 10 acres, it includes 48 cages of about 120 sq. yards each, which are interconnected by…

For over 20 years, honeybees are experiencing excessive mortality. In an attempt to understand the causes, researchers from the laboratory Microorganisms: Genome and Environment (LMGE) in Clermont-Ferrand (France) are studying the role of synergy between a parasite, Nosema, and the use of certain insecticides. For their research, they installed a beekeeping within the university.

Sébastien Steyer, a paleontologist, is one of the rare specialists of the Permian period, when Earth was only one continent: Pangaea. At the end of this period, 90 % of the living species disappeared. Some of them, the vertebrates which live before the dinosaurs and which leave water to settle on earth, are the main forgotten of paleontology.

Wielfried Thuiller, a researcher in ecology and biostatistics, defines in this short film the concept of biodiversity as an ensemble composed of the genes, the species and the ecosystems. He explains the functional and phylogenetic diversity. He emphasizes the dynamic characteristic of the biodiversity through the evocation of the species diversification.

In this short film shot in the Claude Bernard University, located in Lyon (France), and inside its palaeontological collections, Gildas Merceron, a palaeontologist, evokes the major biodiversity extinctions. He explains why and the consequences of the disappearing in mass of many species, through the example of dinosaurs.

At the Claude Bernard University located in Lyon (France), Gildas Merceron, a palaeontologist, tries to understand the extinction of great apes species 8.5 million years ago in Eurasia. He studies within this frame the antelope and its diet at this era.

The acceleration of the species disappearing leads to a mass extinction era. We are witnesses and actors of this biodiversity crisis. Vincent Devictor, a biologist of the preservation at the Institute for evolution science of Montpellier (France), in this film invites us to think about our responsibility.

Animal and vegetal species find ways to adapt to climatic or environmental changes, through migration or acclimatization. Wilfried Thuiller, a researcher in ecology and biostatistics from the Laboratory for Alpine Ecology located in Grenoble (France), presents in this short film the last researches concerning this topic.

Palaeontologists are also interested in biodiversity. Through the study of the species morphological diversity, they allow us to improve our understanding of the consequences due to the climatic and environmental changes. Interviewed in the Claude Bernard University located in Lyon (France), Gildas Merceron explains in this short film this approach.

Wilfried Thuiller, a researcher in ecology and biostatistics, is interested in the impact of the climatic changes on species. After a presentation of the laboratory and of the botanical garden of the Alpine resort Joseph Fourier (France), he evokes one of his work devices: the mathematical modelizations or statistics.

This animationdepicts what would happen in our daily lives if biodiversity were to disappear. This is a story seen through the eyes and imagination of a child, who sees an ordinary world lose all the goods and services brought by biodiversity,which he thechild and certainly ourselves did not suspect..

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