Climate change in Germany
The Rhineland is historically a heavily industrial and population-dense area which includes the states of North Rhine-Westphalia, Rhineland Palatinate, and Saarland. This region is rich in iron and coal deposits and supports one of Europe's largest coal industries. In the past, sulfuric acid emissions from Rhineland coal plants contributed to acid rain, damaging forests in other regions like Hesse, Thuringia, and Saxony.
Franks
The Rhineland Franks who lived near the stretch of the Rhine from roughly Mainz to Duisburg, the region of the city of Cologne, are often considered separately from the Salians, and sometimes in modern texts referred to as Ripuarian Franks. The Ravenna Cosmography suggests that "Francia Renensis" included the old "civitas" of the Ubii, in Germania II (Germania Inferior), but also the northern part of Germania I (Germania Superior), including Mainz. Like the Salians they appear in Roman records both as raiders and as contributors to military units. Unlike the Salii, there is no record of when, if ever, the empire officially accepted their residence within the empire. They eventually succeeded to hold the city of Cologne, and at some point seem to have acquired the name Ripuarians, which may have meant "river people". In any case a Merovingian legal code was called the "Lex Ribuaria", but it probably applied in all the older Frankish lands, including the original Salian areas.