Ken Mauser and co-authers have published a study in the Nature magazine Communications Earth & Environment that shows widespread pesticide contamination of the landscape in the Upper Rhine Valley. The research team shows for the first time that synthetic chemical pesticides from conventional agriculture do not remain on the cultivated land, but spread from the lowlands to the Black Forest and Palatinate Forest. The results show contamination with pesticide mixtures throughout the landscape and shed new light on the potential environmental impact of conventional agriculture. Further information can be found in the study and the RPTU press release .