The journey through the various fields of knowledge begins again, with guests, experts and reports from Italy and the world. This episode also opens with spectacular images from the BBC from the African plains of the Serengeti with the most majestic and feared of animals: the lion. The Noos cameras then enter an Italian reproductive medicine center to understand how science can help couples become parents. And again: a new experiment involving Crisp-Cas9, the technology that allows the genome to be cut and corrected in a targeted manner, even in plants.