Professors and junior professors receive their salary on the basis of the W salary scale. Their basic salary varies in each federal state. They may also be eligible for performance bonuses, which must be negotiated skillfully.
It is only possible to understand higher education in the US in light of the intensified concentration of wealth in the country during the last thirty years.
Yes, English is by all means the language of science. Less than one per cent of all scientific publications worldwide are today written in German. Despite this, there are still many good reasons to learn German.