went through a rather short, but intense program, qualifying him in natural sciences and metallurgy. He took a special interest in developing appliances, such as the "Licht-Erhalter". One of Humboldt's most famous discoveries was the vegetation underground, published in 1793 as "Flora Fribergensis". Many of the plants described were discovered and characterized by him. In 1863, the chemical element indium was discovered by chemist Hieronymus Theodor Richter (1824–1898) and physicist Ferdinand Reich (1799–1882), naming it after its indigo-blue colored flame. In 1886, chemistry professor Clemens Alexander Winkler (1838–1904) isolated the element germanium for the first time while analyzing the rather uncommon mineral argyrodite. This proved Dmitri Mendeleev's periodic table and his prediction of a so-called ekasilicon.'' In the field of process engineering, Erich Rammler and Georg Bilkenroth were awarded the National Prize of the German Democratic Republic (1st class) for their work on lignite coke & coal gasification in 1951. Profile The university has defined core fields that create a unique profile in education and research: Geo Exploring, researching, and (resourceful) use of the system Earth is the focal point of TUBAF's geosciences. The work is based on innovative and novel technologies, e.g. for finding resources, extracting them without unnecessary destruction, and resourceful processing. Materials Innovative materials for today's problems and uses are being developed. This includes the making, as well as recycling of these materials. Energy In this field, scientists develop new, green solutions to energy problems. Production, use, and storage of energy are researched in conjunction. Additionally, digitisation of the energy sector is another topic. Environment Environmental sciences focus on safety and conservation aspects, e.g. of drinking water, as well as on processes in the primary and energy industry. Technology Engineers work on future-oriented solutions, novel products, and optimization of already existing processes & methods. Their studies include applied research as well as foundational questions. Economics Economic topics arise from all of the fields mentioned above. Therefore, researchers in this field work on projects in pure economic disciplines and interdisciplinary projects alike. Programs The university offers programs taught in German, as well as international programs entirely taught in English. All in all, there are 75 programs. Among those are unique ones, such as Applied Natural Sciences, Industrial Archeology, Mine-Surveying, and Chemistry (Diplom), which are taught in German. Admission to all programs from Bachelor through Ph.D. is performance-based and without tuition fees (as usual for consecutive studies at German