In appearance, everything seems under control when the shark changes on the back and suddenly stops moving. This strange reaction, observed in several species, has intrigued scientists for decades. Unlike the usual behavior of the animal kingdom, often guided by survival or reproduction issues, tonic immobility in sharks escapes classic adaptive logics. Neither real asset … Read more

[Article déjà publié le 24  juin 2024] Thermoregulation, which allows the metabolism to keep a stable temperature enters the process of reflection that must be had vis-à-vis hydration. Find the freshness on the return of sunny days: what are the tips that work? The return of sunny days is largely synonymous with the return of … Read more

[Un article de The Conversation écrit par Alain Naef – Assistant Professor, Economics, ESSEC] When we take the plane, we are often offered the possibility of planting trees on the other side of the planet to compensate for the emissions of our flight. A luxury that allows the 2 to 4 % of the inhabitants of … Read more

Do you think you are superstitious? Don't scare black cats? Do you not mind opening an umbrella at home or passing below a scale? Very well, but the little Grigri that you keep preciously in your wallet … Taken your hand in the bag! Rest assured, the vast majority of people are more or less … Read more

3D time: an idea as daring as fascinating Today, we perceive time as a tense thread between yesterday and tomorrow. A linear axis, on which our lives advance inexorably. But for Kletetschka, this representation is too limited. He suggests that time forms a three -dimensional structure, just like space. In this new vision, space would … Read more

[Article initialement publié le 1 septembre 2024] A few dozen species of dolphins live in the oceans of the world. There have also been freshwater dolphins that have lived in rivers for millions of years. Most of these marine mammals prefer hot waters, but they can still appreciate colder, even frozen climates. This is the … Read more

[Article initialement publié le 25 juin 2024] Heat waves are more and more frequent and intense with climate change. A worrying phenomenon that accompanies this increase in temperatures is heat stroke, a potentially fatal medical emergency. Understanding what a heat stroke is, knowing how to identify the symptoms and knowing the gestures that can save … Read more

[Un article de The Conversation écrit par Mônica Macedo-Rouet – Professeure des universités en psychologie de l”éducation, CY Cergy Paris Université] I have read the writings of master's students for over twenty years. This year, I noticed a massive increase in the number of work which included whole passages stylistically close to the texts produced by … Read more

[Un article de The Conversation écrit par Andrew Hacket-Pain – Senior Lecturer, School of Environmental Sciences, University of Liverpool] summer solstice. But we are not the only species to have noticed that June 21 is a special moment. Studies show that this is also an important moment for plants. Thus, recent studies (including one of mine) … Read more

When the sky rumbles, it is not only the roofs or the trees that are threatened. Within homes, electronic devices become also vulnerable, sometimes without any visible sign betraying the danger. The question of unplugging your internet box during a thunderstorm then insistently comes up, between inherited common sense and technical realities much more complex … Read more