At the HKI, natural science graduates can seize the opportunity of comprehending their doctoral qualifying exam on challenging research topics. As a doctoral researcher you will enrol at a graduate school that will enable you to obtain substantial mentoring support from experienced scientists. At our established graduate schools ILRS and JSMC, doctoral candidates from all over the world get together and carry out joint research within a closely linked network of different institutes in Jena. This will allow them further to be part of an extensive social and cultural life.