richard rhodes

One of my first memories of watching TV during the early 1950s was ads promoting leaded gasoline for reducing engine knock.  Little did I suspect the strange history of that gas.  By the beginning of World War I, it became clear that the internal combustion automobile was edging out its rival steam cars and electric cars.  Shortly afterwards, Thomas Midgley began researching how to remove the knocking “ping” sound from gasoline-powered cars.

Hiroshima après l’atomisation de 1945
Il y a 72 ans, respectivement le 6 et le 9 août 1945, des bombes atomisaient en quelques secondes les villes d’ Hiroshima et de Nagasaki au Japon. En mémoire de cette tragédie, nous republions ici l’article rédigé en 2015 par Baptiste Mannaia pour le Cercle des Volontaires :