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When an individual is afflicted with several chronic conditions at the same time, it is called multimorbidity. This is an increasingly common problem in Europe. How do general practitioners deal with it? How do they manage prescriptions that are not only vastly different but can lead to damaging drug interactions? These questions are explored by researchers Hélène Carrier, Anna Zaytseva, Aurélie Bocquier, Patrick Villani, Hélène Verdoux, Martin Fortin, and Pierre Verger in an article that examines the attitudes and practices of private general practitioners.

Invasive species are the second most frequent cause of global biodiversity loss, and financial consequences in Europe are estimated at 12 billion euros per year. Is it possible to eradicate these devilish pests with limited financial resources? To help identify priorities in such battles, a method is offered by authors Pierre Courtois, Charles Figuières, Chloé Mulier et Joakim Weill, which is based on interactions between different species.

In an op-ed in Le Monde, the teacher-researcher in economics Karine Gente (AMU, FEG) is indignant of the inequality created in higher education by the difference in treatment between university students and future students of 'grandes écoles'.

According to game theory, free competition is not always ideal for society. Economists Gaëtan Fournier and Marco Scarsini use this perspective to study the spatial competition between several retailers. The retailers choose the location of their business to maximize their profits. According to the researchers’ model, pursuing an individual profit leads to stable but undesirable situations for the common good.

How many people are living in poverty in the world? Finding the answer to this simple question poses a wealth of difficulty. Determining who lives in poverty is a difficult task, and the various means used to count these people can give quite different values. Economists Zhou Xun and Michel Lubrano seek to illustrate this issue in their article, in which they propose a new method for assessing poverty in developing countries.

After Esther Duflo, Nobel Prize in economics last year and Emmanuelle Charpentier, Nobel Prize in chemistry this year, France is in the spotlight, neither of them have done their research in France, why ? Op-ed article by Alain Trannoy in Le Echos. Only in French.

Only in French - The lectures are open to everyone for the 2020-2021 edition! Why do we get into a relationship? What do economics teach us in times of epidemic? Why do we tend to put off our homework until tomorrow? Can the carbon tax be fair? So many questions answered by researchers in economics.

The analysis of conflict in Africa often foregrounds the existence of ethnic tensions, which are often due to issues with access to fertile land, which gives rise to inequalities. Economists Nicolas Berman, Mathieu Couttenier and Raphaël Soubeyran delve into the impact of soil productivity on conflicts. According to their analysis, the risk of violence increases in proportion to the level of difference in soil fertility.

Cecilia Garcia Peñalosa (CNRS, EHESS) was one of the guests of "Eco d'ici et éco d'ailleurs" on Radio France Internationale. Only in French

Should we favor large metropolises over small communities? According to standard economic theory, the answer is yes, since centralizing helps reduce expenses. However, when public authorities lack some of the relevant information, opting for a federal structure that allows redistribution between many small towns may be the way to go. Researchers Nicolas Gravel and Michel Poitevin demonstrate this by studying the distribution of public and private goods in both federal and centralized structures.