There are measurable differences in intelligence. But how they translate into practice depends on other factors.

When we present our beliefs as knowledge, we quickly find ourselves denying the facts. By abandoning refutability in favor of an interpretive approach, we border on the absurd, as in the case of Planned Parenthood's emphasis on pregnant men.

CHRONIQUE, Pascal Couchepin | Raphaël Gaillard dirige le pôle hospitalo-universitaire de psychiatrie d’un grand hôpital parisien et de l’université de Paris. Il fut récemment l’invité de l’émission littéraire «La Grande Librairie», sur France 5. Et ce qui ne gâte rien, il a des racines valaisannes, de Saxon précisément. Le thème qu’il aborde après beaucoup d’autres, mais à frais nouveaux, est celui des rapports entre la folie et la créativité. D’où le titre de son livre repris d’une phrase de Diderot: «Les grands artistes ont un petit coup de hache dans la tête».

DOSSIER «LE GRAND RETOUR DU NUCLEAIRE», Jean-David Ponci | Mastering fusion would make it possible to reproduce the thermonuclear reactions of stars that are not at the end of their lives, where four hydrogen atoms fuse to form one helium atom. This is the physical process that generates the greatest amount of energy. Controlling it to produce electricity would be like putting the sun in a box. But is it really feasible on Earth? If so, when? And would such plants really be less dangerous in the event of an accident than fission power plants? Alessandro Casati, PhD in physics, spent four years working on various nuclear fusion projects: the major international ITER project in France and the Tokamak at EPFL in Switzerland. The specialist now works in finance, but has continued to follow advances in the field out of passion. This is a great advantage, as it enables him to respond impartially and give us his expertise on the future of research.

Pourquoi la girafe a-t-elle un long cou? Vous êtes-vous déjà posé cette question? Jean-Baptiste de Lamarck est en tout le...

As we all know, bees are kamikazes. They die after stinging. However, we don't necessarily see the evolutionary paradox behind this behavior. Indeed, the particular case of stinging bees contravenes the general laws of evolution. We need to explain it if we are to preserve these laws.