Story : Superquark begins this year with an exploration of Planet Earth, the first of a beautiful series of documentaries made by the BBC in the most hidden and fascinating corners of the planet. In this episode, the journey from one pole to the other in the observation of the main ingredients that have shaped our earth as it is: salt, water, atmosphere, inclination of the earth's axis, etc. Alberto Angela and Michelangelo Pepe will accompany us in the exploration of one of the largest catacombs of Roman times, those of Peter and Marcellinus on the Via Casilina, which extend for a few dozen kilometers and preserve spectacular traces of wall paintings. A strange disorder, prosopagnosia, that is, the difficulty in recognizing faces, cited by the famous neurologist Oliver Sacks, in the case of an English girl told by Marco Visalberghi. Radar and sonar derived from the observation of bats and dolphins, hang gliders from the study of the remiges of condors and so on.