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Nous le savons tous instinctivement : la température est en général plus fraîche au coeur d'une forêt. Mais peut-on aller plus loin et mesurer ce microclimat de manière plus précise, à l'échelle de quelques mètres ? Les scientifiques du projet IMPRINT se sont lancés dans l'aventure en équipant notamment trois forêts françaises de centaines de capteurs de température. Au fil de leur étude, les forêts révèlent peu à peu leur fonction de climatiseurs naturels.

Portrait de Jean Nabucet, médaille de cristal du CNRS 2023, ingénieur de recherche en sciences de l'information géographique au laboratoire Littoral, environnement, télédétection, géomatique. Jean Nabucet est en constante recherche de nouveaux outils à déployer ou à développer pour l'observation de la Terre. Géographe spécialiste de l'évaluation de l'impact des sociétés humaines sur le paysage urbain par télédétection, il obtient son doctorat de géographie en 2018. Au quotidien,…

In the US State of Arizona, it is not unusual to see rivers that have dried up. Some only flow in specific sections or at certain times of the year. They are known as intermittent rivers. At the CNRS iGlobes laboratory, located within the University of Arizona, researchers study these precarious rivers in the city of Tucson, and in the watershed of Las Cienegas.

Listening to landscapes rather than watching them. This is the approach that Anne Sourdril and Luc Barbaro have chosen to conduct their research project. As an anthropologist and an ecologist, respectively, they travel across southern Arizona to hear what the local people and landscape have to say. The concept of soundscape is based on the study of the sum of all sounds, whether they are of animal, meteorological or human origin.

Episode 7 : "Déplacer des montagnes", ce n'est pas toujours une métaphore... Parfois, ce sont LITTÉRALEMENT des hélicoptères qui transportent des morceaux de montagne à travers les Alpes. Mais promis : c'est pour leur bien !

Pour contribuer aux transitions écologiques et sociétales, le CNRS développe des technologies et des procédés innovants permettant d'utiliser les ressources tout en préservant l'environnement et les ressources naturelles.

Certains incendies, comme ceux qui se sont déclarés dans la province de l'Alberta au Canada depuis mai 2023, semblent incontrôlables. Comment anticiper un phénomène aussi variable et imprévisible ? Ce reportage vous emmène en Corse, où des expériences de terrain et des simulations permettent aux scientifiques de mieux comprendre la dynamique des feux de forêt.

Ce nouvel épisode d'Un zeste pour la planète nous parle d'éoliennes... Mais surtout d'une machine extraordinaire, qui permet de simuler la rotation de la Terre et ses écoulements atmosphériques pour réaliser des expériences inédites. Un instrument précieux lorsqu'il s'agit d'implanter au mieux des parcs éoliens en haute mer, là où ils sont soumis à diverses forces terrestres...

The decline of coral reefs around the world seems irreversible. However, scientists have not yet spoken their last word! In this report from French Polynesia, a team of researchers attempt to reverse this trend by helping coral adapt to climate change.

Lutter contre la pollution atmosphérique urbaine suppose la fiabilité des mesures et l'information active du citoyen. Le projet SMILE propose de mailler la ville en déployant une flottille de capteurs low-cost interconnectés rendus précis grâce à un procédé nouveau d'auto-calibration. L'emploi de drones permettra de générer des cartographies 3D à l'échelle d'une rue sur une plateforme citoyenne où se rencontreront toutes les parties prenantes : citoyens, académiques, décideurs politiques, monde…

SURe est une plateforme cloud prédisant les îlots de chaleur et la sévérité de la COVID-19 à l'échelle du coin de la rue. Construit à partir de modèles théoriques validés sur de nombreuses villes, SURe révolutionne la façon d'accéder aux données environnementales à l'échelle du quartier sans réseaux de capteurs. SURe fournit des prévisions en temps réel, qui varient en fonction de la localisation, de la saisonnalité, de la densité de la population locale et de la texture de la ville.

As part of its participation in VivaTech 2022, the European event dedicated to technological innovation, CNRS is presenting a sample of its deeptech know-how through various start-ups from its laboratories. These start-ups include Rosi Solar, which uses raw materials from the photovoltaic industry's waste, and FunCell, whose biosourced additives are used to reinforce paper and cardboard.

Une équipe de chercheurs embarque chaque année à bord du Marion Dufresne pour étudier des animaux peu connus : le macrozooplancton et le micronecton. Ces organismes de milieu de chaine alimentaire se composent de gélatineux, de crustacés et de poissons. Mais pour les étudier, il faut d'abord les repérer en pleine mer grâce à un instrument acoustique, un écho sondeur. Puis ils sont pêchés, triés par espèces et comptés. En les suivant d'année en année, les scientifiques peuvent mieux comprendre l…

Elephants, crocodiles, hippopotami… In Botswana, the Okavango delta is a real paradise for the local fauna during the flood, which lasts several months a year. In this documentary, a team of French scientists takes you on board to study the geological, hydrological and climatic features of this unique region.

Ingénieure d'étude spécialisée en analyse chimique des sols et des eaux au sein de l'unité Écosystèmes, biodiversité, évolution (ECOBIO). Spécialisée dans l'analyse des éléments présents dans les matrices aquatiques, solides et liquides, Nathalie Josselin Le Bris exerce au CNRS depuis 2003. Elle a créé la plateforme d'analyse physico-chimique EcoChim, qui permet de quantifier et de caractériser divers échantillons biologiques et environnementaux issus des sols, de l'eau, des…

Un bon bain moussant pour votre téléphone et votre ordinateur… Promis, ce n'est pas une grosse bêtise irréparable, mais un moyen novateur de réduire les déchets électroniques et la pollution. Et même pas besoin de les faire sécher dans du riz ! Promis, on vous explique tout dans cet épisode.

Portrait d'Ana Rodrigues, médaille d'argent du CNRS 2022, directrice de recherche au Centre d'écologie fonctionnelle et évolutive, spécialiste de la macroécologie et de la conservation de la biodiversité. Après un master à l'université de Lisbonne et une thèse à l'université de Sheffield, en Angleterre, les recherches d'Ana Rodrigues la conduisent à Washington DC puis à l'université de Cambridge. En 2009, elle intègre le CNRS au Centre d'écologie fonctionnelle et…

Portrait de Cécile Albert, Médaille de Bronze du CNRS 2022, chercheuse en écologie à l'Institut méditerranéen de biodiversité et d'écologie marine et continentale, spécialisée en écologie du paysage. Après une formation initiale à l'École polytechnique, Cécile Albert obtient un doctorat en écologie à l'université de Grenoble en 2009. Décrochant une bourse de mobilité Marie Skłodowska-Curie, elle rejoint l'année suivante l'université McGill, au Canada, pour trois ans. Depuis…

Birds are an increasingly rare sight in our cities. In this report, researchers from the Centre for Biological Studies of Chizé (CEBC) investigate the problems – noise, light, lack of food – that affect various species of birds in urban areas, and seek solutions to save them from extinction.

This second episode looks at the work of scientists at the Grenoble Institute of Geosciences who are studying the climate change effect on glacier behaviour. In mountainous and polar regions, glaciologists such as Fanny Brun measure the melting glaciers and collect ice samples, sometimes under extreme conditions, as evidence of climate change over time. Laboratory analyses are used to understand the climate change effect on glacier behaviour. Gerhard Krinner, a…

Discover the studies behind the statistics of 6th IPCC report and the research work of scientists who aim to gain a better understanding of climate change and its impact. This first episode presents the work carried out by members of the LSCE (Laboratoire des sciences du climat et de l'environnement) at the Traînou site in France. These scientists collect air samples using stratospheric balloons that reach altitudes of over 30 km. The analysis results of these samples are then used…

The scale and speed of the change in climate we are facing today is unprecedented. Heat waves, droughts, floods? We are already experiencing the effects on a daily basis. The effects will increase until at least 2050 and all European regions will be affected. Based on the results of the latest available studies, and in particular on the 6th IPCC report, this animated film produced by scientists in the framework of the European project EUCP presents the changes in Europe's climate expected in…

Faced with global warming, coral reefs are on the front line. As global temperatures rise, the coral bleaches and dies. This decline has an impact on its entire ecosystem. Coral reef researchers Serge Planes and Laetitia Hédouin explain why research at CRIOBE is crucial to saving the coral. This video was produced as part of the OneOceanScience campaign organised by Ifremer, CNRS and IRD. Scientists from 33 countries take part in this digital world tour and explain in a series of short…

Antoine Aiello a une carrière foisonnante : chercheur en modélisations et simulations comportementales des systèmes complexes, président de l'université de Corse… et désormais directeur de la plateforme Stella Mare, et son crédo est de : « transformer la recherche en richesses afin de répondre à des questions socialement vives ». La plateforme Stella Mare, labellisée par le CNRS en 2011, réunit scientifiques, professionnels de la mer, gestionnaires de l'environnement et acteurs…

This sixth episode traces the current development of the Amazon's climate through the involvement of local inhabitants and the analysis of satellite images. The findings are clear, there is more drought in the south, more humidity in the north. With cascading consequences for the global climate...

In this fifth episode, we discover the importance of wetlands. They cover only 3% of the world's surface but capture a third of the carbon trapped in the soil. How do they react to changing temperatures? To find out, researchers have installed a range of instruments at a site near Counozouls in the Pyrenees.

Antoine Aiello, Nora Dempsey, François Jérôme and Amanda Silva Brun are the four recipients of the CNRS 2021 Innovation Medal. Created 10 years ago, this distinction honours people whose outstanding research has led to significant technological, economic, therapeutic or social innovations that promote French scientific research. From patent filings and pre-maturation programmes for innovative projects, to a joint research laboratory with economic stakeholders and accompanying…

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.

Les arbres sont comme nous : depuis quelques années, ils prennent un gros coup de chaud, et ça ne devrait pas s'arranger tout de suite... Alors pour comprendre quel impact le réchauffement climatique aura sur nos forêts et leurs écosystèmes, on vous emmène sur un site exceptionnel où des chercheurs et chercheuses soumettent des chênes méditerranéens à un petit coup de stress en simulant l'avenir de notre climat... Pour la bonne cause bien sûr !

What happens to our garbage after it is dumped? Through the example of Delhi, the film explores the transformation of a piece of plastic waste into a resource, through filmed interviews with diverse “people of waste” living in the shadow of consumer society. It aims at making visible the myriad of professions that specialize in the collection, sorting, reselling, cleaning, shredding and transformation of waste, from the stigmatized garbage picker at the bottom of the chain until…

This fourth episode is devoted to the sets of equations that represent the physical mechanisms that affect our planet, such as the circulation of water and carbon. How are these models developed? What are they used for? Meet the scientists who are sounding the alarm with the help of these models.

In this third episode, we find out how to simulate the climate of 2050 and how droughts will be more frequent and last longer. In Lusignan, near Poitiers, agronomy researchers have designed a high-tech mobile greenhouse with drone tracking and 3D images. This may be where the future varieties of European grasslands will germinate...

Portrait de Laura Maxim, lauréate de la médaille de bronze du CNRS 2021, chercheuse en études des sciences et des technologies au Laboratoire interdisciplinaire sciences, innovations, société, centrées sur l'usage de la connaissance scientifique dans les politiques du risque chimique. "Au moment de mon Master 2, la Commission européenne initiait le renouvellement des politiques de gestion des risques chimiques, le plus ambitieux en termes de protection de la santé publique…

Episode 2: As the melting of ice intensifies and glaciers erode year after year, threatening to accelerate the rise in water levels, researchers from the CNRS are closely monitoring the Argentière glacier (Alps) using an original method to better understand and measure its movements.

A pandemic is a complex phenomenon, an invariant for humans in their environment. In fact, from the Neolithic era to the present day, from the cattle plague to Sars-Cov-2, the emergence of new infectious diseases is often the result of changes that humans force on their environment. The emergence of a global health crisis in 2020 is a real warning sign on the uses of life. In this documentary, discover how biologists, anthropologists, mathematicians and historians can help us learn…

Antarctica is a hostile territory due to its isolation and extreme climatic conditions, but it is also a place of unique opportunities for research and has been a protected area reserved for scientific exploration since the Madrid Protocol was signed in 1991. This film presents the work of four researchers from various fields who went to Antarctica to conduct their research project: studying animal behaviour, observing the Earth's magnetic fields, collecting and analysing micrometeorites and…

Episode 3: It is definitely good to stop polluting more. But even better is cleaning up our planet! Researchers have developed technologies to create synthetic products that not only do not generate more pollution, but also remove existing pollution! Through phyto-restoration using plants, researchers are able to 'naturally' depollute waste water and soil, producing reusable compost with very little impact on the environment.

How much longer will marine life be able to withstand rising temperatures? Find out more about how scientists are trying to determine the impact of global warming on the physiology and behaviour of the gilthead sea bream.

The Tonga mission takes you on board the Atalante, a French oceanographic vessel searching for shallow submarine volcanoes in order to understand and predict the effects of fluid emissions on marine life and the climate. The expedition, led by two researchers, Sophie Bonnet (oceanographer, IRD) and Cécile Guieu (oceanographer, CNRS), is analysing and studying the effects of the addition of trace elements from shallow hydrothermal springs to determine the potential impact on marine productivity…

They place microphones in sunflower fields... to count bees and other pollinators! Discover the ingenious experiments to study these diverse insects and their effects on our crops, conducted by a team from the Centre for Biological Studies in Chizé.

Portrait de Franck Perret, lauréat de la Médaille de Cristal 2020 du CNRS, assistant ingénieur en électrotechnique à l'Institut écologie et environnement et co-responsable technique de la plateforme de recherche Observation et mesure des environnements actuels et anciens (OMEAA, EVS/Arché-Orient) qui développe des outils de surveillance des hydrosystèmes.

In recent years parasites such as the tiger mosquito or the tick have continued to conquer new territory, especially in Europe and the United States. What causes this proliferation? How to protect from it? The scientific community is trying to shed light on the phenomenon, which is responsible in particular for the transmission of certain animal diseases to humans.

Episode 1: In the future, what if toilets separated our organic waste directly into a reusable product, and our urine was used to fertilise the fields with minimal pollution? We take you on a journey to discover the toilets of the future!

Les stations d'écologie expérimentale, à travers des dispositifs et des outils innovants, offrent des conditions d'étude uniques des écosystèmes. L'équipe Infrastructures de recherche en écologie expérimentale participe au développement d'une recherche d'avant-garde en écologie globale sur la compréhension des écosystèmes et de leur réponse aux variations environnementales. Les stations permettent l'acquisition de connaissances générales et pluridisciplinaires sur l'étude du lien entre…

How do waves form and propagate? What means do we have to understand this phenomenon and anticipate nature's furies? We now have the ability to study their power and trajectory using mathematical models. The aim of this research carried out by researcher Volker Roeber at the University of Pau and Pays de l'Adour, is to reduce the risks of flooding and to develop systems that harness the power of waves as a form of renewable energy.

If a natural environment becomes degraded, how can we reconstitute all the complexity of life? In the Crau flatland near Arles, in France's Bouches du Rhône region, scientists turned to ants to restore the biodiversity of an ecosystem degraded by human activities after an oil pipeline burst in the heart of a nature reserve.

Waterproofing, fire-proofing and non-stick coating. These technologies bring safety and comfort to our daily lives, but are based on chemicals called per and polyfluoroalkyl substances or PFAS. Nicknamed “forever chemicals”, these molecules are volatile - they can be emitted by the materials they are applied on and get released into the air. There, they can linger in the environment for decades and travel vast distances, accumulating in regions far from their initial site of emission. In the…

Nanoplastics with a size of less than a thousandth of a millimetre are the finest form of plastic pollution. The Pepsea research project focusses on a type of nanowaste that is still poorly understood. Researchers chose Guadeloupe to study its impact on the environment. The island is exposed to the ocean and the North Atlantic Gyre making it an area of plastic accumulation. It is the perfect field of study for researchers who are going to explore its beaches and mangroves. They investigate the…

Bio Inspir' studies the depolluting qualities of certain land and aquatic plants. This start-up is especially interested in water mint, a small plant native to the southern French Occitanie region that has exceptional capacities for purifying water containing metallic and organic elements. Used in the form of a powder or alive, this plant can purify contaminated water directly at industrial sites. #BioInspir' finds industrial applications for the research conducted by the laboratoire de Chimie…

LEAP is a new generation aircraft engine that reduces fuel consumption and carbon emissions by 15%. It was jointly designed in a collaboration between Safran Aircraft Engines and several CNRS laboratories, including EM2C (Laboratoire Énergétique Moléculaire et Macroscopique, Combustion/molecular and macroscopic energy and combustion laboratory). The advantage of this partnership is to improve knowledge on the production of soot, which is fine particles resulting from the incomplete combustion…