"March" is the time for gathering strength. Astronomer Rémi Cabanac explores the March sky, and in South Tyrol the bears awaken from hibernation. On the wind turbines and research platforms of the Baltic Sea, the damage from the winter must be repaired. In the Harz Mountains, biologist Andreas Marten observes the "sunning" of ants, and fruit grower Geiger has to prune his trees on the Alb ...