Classification systématique du vivant extraterrestre

Close and daily, sometimes comical but often tragic, sleepiness takes an important place in our lives. Suddenly falling asleep, sometimes with their eyes still open, affects more than 10% of the population. The leading cause of fatal accidents on motorways, drowsiness is also prevalent in the world of work. A silent, irrepressible phenomenon... a flaw in a system of performance, speed, reactivity. So what is happening in our brain? Can we control the conditions of sleepiness? By working on sleep and especially on the functioning of wakefulness, researchers are trying to understand the biological and environmental mechanisms that keep humans at the peak of their abilities. After a clear technological improvement, it turns out that man, having become an expert and process controller, finds it very difficult to focus his attention over time.

Historian Patrick Boucheron revisits the most important dates in history through the prisms of memory and collective imagination.

Math is an exotic and confusing country. We speak a bizarre language, full of homeomorphisms, differential varieties, transfinite numbers. But we also find epic landscapes, dizzying ideas and even, sometimes, useful things!

The story of the cross destiny of George Orwell (1903-50) and Aldous Huxley (1894-1963), the genius authors of the two most groundbreaking novels of anticipation of the 20th century: 1984 and Brave New World; two lucid witnesses of the maledictions of the modern world whose novels have found a considerable echo with our time.

During the Second World War, the allies' key objective was to crack the German army's encrypted communications code. Without a doubt, the key player in this game was Alan Turing, an interdisciplinary scientist and a long-forgotten hero.

Species of species renews our representation of the tree of life and reveals to us that the millions of species that inhabit the planet, ours included, all belong to a single and immense family. How to classify living species? What criterion should be used to sort them? The number of legs? The presence of wings, feathers, hair, scales? Not so simple...