La Concorde, l'Hôtel de ville ou le Louvre inondés... Une crue centennale de la Seine, égale ou supérieure à celle de 1910 est une hypothèse on ne peut plus sérieuse qui pourrait très fortement impacter Paris et l'Île-de-France dans les prochaines années. Aujourd'hui, des dizaines de scientifiques travaillent sur ce risque majeur, accentué par le réchauffement climatique : comprendre le mécanisme des crues, mesurer et prévoir très précisément leur étendue, analyser le rôle des nappes souterraines, protéger le métro ou les grands musées, et imaginer une ville résiliente.

May 5, 1821. Napoleon Bonaparte, deposed emperor exiled on the island of St. Helena, is about to take his last breath. The son of a Corsican family, he has been close to death on many occasions since, as a young captain in the revolutionary army, he seized Toulon from the royalists in 1793.

On June 26, 1813, Austrian Foreign Minister Klemens von Metternich went to meet Napoleon Bonaparte at his headquarters in Dresden, in the Kingdom of Saxony. Although the French emperor still dominated Europe, the disastrous Russian campaign had sapped his military power. Could France continue to count on Austria's support? A nine-hour private meeting would decide the fate of Europe.

During the Nuremberg Trials, the victors of the Second World War judge those responsible for the Third Reich.

The discovery of the transmission of diseases by microbes, and the victorious fight against the pandemics that followed, owe much to the rivalry of Pasteur and Koch.