April is a moody and unpredictable month. Sunshine is followed by rain, frost or snow. Ornithologist Peter Becker waits for the arrival of the common terns, and Andreas Schober can now explore the cave system of the Swabian Alb. It is not only in Thuringia that sowing is imminent; in Provence, too, the most important time of the year begins with the truffle sowing ...