Story : The Pacific Islands in Nicolas Hulot's documentary: Hawaii, emerging from the depths of the ocean; Tahiti, the oldest, and the Marquesas Islands with their extraordinary fauna. An unprecedented exploration in a world where fire and water have reigned since the dawn of time. Interview with Craig Venter, one of the scientists who played a leading role in decoding the human genome. Today Venter studies the bacteria found in the oceans. In the future, bacteria capable of extracting hydrogen from water could be created in the laboratory. Is the era of hydrogen energy approaching? In Lorenzo Pinna's report. 75 years ago in Italian cities there was only one car for every 225 inhabitants, flocks and herds of oxen crossed the streets among pedestrians and bicycles, the tram was the preferred means of transport. In the column "75 years ago", edited by Fiorella Ravera and Giancarlo Di Giovine, urban traffic before and after the automobile boom.