Le Journal

A l'heure où les élections municipales se profilent, quel regard portent nos voisins sur l'organisation territoriale française ? Notamment sur la spécificité du rapport entre élus et cadres dirigeants. Un haut fonctionnaire allemand nous livre son analyse au regard des pratiques de son pays.

Une nouvelle fois en 2025, le département des Pyrénées-Atlantiques n’a pas été épargné par les orages en 2025. Une commune figure d’ailleurs dans le top 10 des villes françaises les plus exposées aux éclairs.

One of the most remarkable facts about the Universe is simply that, over the past couple of centuries, humanity has actually been able to make sense of much of it at a basic, fundamental level. We’ve determined what all of the luminous and light-blocking material, plus radiation, is made of: the normal matter and energy in our Universe that consists of particles within the Standard Model. We’ve discovered black holes and have come to understand how gravity and the expanding Universe works: governed by the laws of Einstein’s General Relativity. And we understand the rules governing how particles interact: through the strong nuclear, weak nuclear, and electromagnetic forces, as dictated by quantum field theory. While these developments occurred both theoretically as well as observationally and experimentally, this picture has truly been cemented over the last 50 years by a large suite of data: collected from precise particle collider and detector experiments here on Earth, in space, as well as astrophysical and cosmological observations of the grand Universe. The Standard Model of particle physics, as well as the Standard Model of cosmology — rooted in quantum field theory and General Relativity — form the grand foundation of our modern scientific enterprise. Many have devoted their lives to exploring extensions and alternatives to these standard scenarios, and are (unfortunately) often ridiculed as doing “useless” research. But this research, when done correctly, is anything but useless; it represents the most underappreciated achievements in theoretical physics over the past several decades. Here’s what we’ve learned, and why it’s so valuable. On the right, the gauge bosons, which mediate the three fundamental quantum forces of our Universe, are illustrated. There is only one photon to mediate the electromagnetic force, there are three bosons mediating the weak force, and eight mediating the strong force. This suggests that the Standard Model is a combination of three groups: U(1), SU(2), and SU(3), whose interactions and particles combine to make up everything known in existence. Despite the success of this picture, many puzzles still remain. Credit: Daniel Domingues/CERN When it comes to making sense of the Universe, it’s important to focus our attention on the big picture: the full suite of data and what it both does and doesn’t indicate. Whenever you have a scientific theory, model, or framework that you work within, one of the biggest challenges is to extract testable predictions from it: predictions that are quantitative (i.e., that answer the question of “how much” of an effect occurs), predictions that lead to potentially observable and/or measurable signals, and predictions that differ from the predictions of the other theories, models, or frameworks that are used to describe and predict reality. We can immediately recognize, historically, that there are many such examples where this is exactly how science advanced. Some notable revolutions included: Kepler’s theory of elliptical orbits in a heliocentric framework, which matched the observed orbits of the planets, especially that of Mars, better than any other model, including the models of Ptolemy and Copernicus. Dirac’s theory of the relativistic electron, leading to the successful prediction of positrons (and other forms of antimatter), of the behavior of light and charged particles near the speed of light, the understanding of electron spin, and to an understanding of the fine structure of the hydrogen atom. And Einstein’s theory of gravitation — General Relativity — which successfully explained aspects of gravity (like Mercury’s perihelion precession) that Newton’s theory could not, and made several new predictions like the deflection of starlight that passed near a massive object (like the Sun during a solar eclipse) that agreed spectacularly with experiment…

L’incendie a eu lieu dans la nuit de ce lundi 19 au mardi 20 janvier.

New Game Plus Ubisoft attaqué en justice par l’ancien responsable de la franchise Assassin’s Creed Décidément, Ubisoft n’a pas encore fini d’être sous le feu des projecteurs en ce début d’année 2026. Après des fermetures de studios, des licenciements et des départs surprises, c’est désormais au tour d’anciens employés du studio de faire une levée de bouclier. Aujourd’hui, nous apprenons grâce au média Radio-Canada que l’ancien responsable de la licence…