Beneath their hairy and peaceful appearance, bumblebees hide a formidable sense of organization. When their nest is threatened, their response is immediate, collective and surprisingly structured. Far from a simple panic reflex, these insects deploy a defensive strategy on several levels, capable of adapting to different types of aggression. A simple tremor can mobilize the … Read more
Among the countless vestiges of the past buried beneath the sediments, certain fossils resist oblivion by telling more than just the story of an extinct species. They capture a moment, a gesture, sometimes even a cause of death. This is the case of this bird fossil discovered in a Chinese museum, whose posture and internal … Read more
Every end of the year comes the same dissonance. December, etymologically the “tenth month”, nevertheless closes a sequence of twelve. The paradox is obvious, but few people know its origin. This discrepancy is not a simple detail forgotten by historical watchmakers. It is the reflection of a calendar system first shaped by agricultural and military … Read more
Before the galaxies drew their spirals, even before light crossed space freely, certain stars were already living intensely enough to die in a luminous crash. It is to this still obscure period that astronomers have managed to go back. Using technology capable of capturing the oldest glows, they identified a supernova whose signal comes from … Read more
As modern societies grapple with rising inequality, one idea persists in collective imaginations. That of a bygone golden age, where the first humans would have lived in perfect equality, far from hierarchies and dominations. This scenario seduces as much as it reassures, but the in-depth study of egalitarian societies reveals a much more nuanced reality, … Read more
[Un article de The Conversation écrit par Ricardo Azambuja – Professeur associé en management, EDHEC Business School – Anahid Roux-Rosier – Professeure associée, Fundação Dom Cabral & Sophie Raynaud – Assistant Professor, Excelia] Long considered a marginal choice, plant-based diets are now recognized for their environmental and ethical benefits, but their adoption faces persistent obstacles: lack of … Read more
[Article déjà publié le 11 août 2025] Sleep disorders are not always just about insomnia or waking up early. For many people, it is a pressing need that interrupts the night, sometimes repeatedly, with a direct impact on recovery and energy the next day. This phenomenon, known as nocturia, may seem harmless but often reveals … Read more
The Moon preserves much more than Apollo's footprints. For billions of years, its soil has silently recorded the activity of its terrestrial neighbor. A team from the University of Rochester, along with researchers from the Center for Integrated Research Computing and the Laboratory for Laser Energetics, has demonstrated that particles from Earth's atmosphere – including … Read more
On the surface, Greenland appears as a frozen kingdom, dominated by one of the last continental ice sheets. But beneath this white expanse, the bowels of the Earth tell another, much more eventful story. A story of trapped heat, ancient tectonic movements and still active rocks, whose influence on the climate had until now never … Read more
It only takes one look at human history to be struck by a disturbing evidence. Capable of building civilizations, solving complex equations or sending probes to the edge of the solar system, Homo sapiens seems to embody the pinnacle of biological intelligence. And yet, this same species causes the collapse of ecosystems, persists in producing … Read more
