Plants do move ! And they move a lot when observed at the appropriate timescale. Although plants movements were already observed as early as 400 years before common era by Androsthenos of Thasos (an admiral of Alexander the Great who reported about the ``sleep movements'' of the tamarind's leaflets) and later popularized by Darwin, the active motions of plants have never beenpar jderr - Thèses hors de l'EDPIF