SO many different types of sciences one could be mad about and use to take over the world!
Physics: the study of matter, energy, space and time.
Botany: the study of plants.
Chemistry: the study of reactions, creations, and binding of matter.
Mineralogy: The study of minerals such as their identification, and properties.
Biology: the study of living things.
Astronomy: the study of space.
Geology: the study of Earth and its components, e.g. soils, rocks, etc.
Microbiology: the study of microorganisms, e.g. bacteria and their effects on other living organisms.
Palaeontology: the study of prehistoric life through evidence provided by fossils.
Medicine: Diagnosis and treatment of disease and damage to the body.
Pathology: the study of diseases and their causes, processes, development, and consequences.
Linguistics: The study of language, its structure and phonetics.
Entomology: the study of insects.
Seismology: the study of earthquakes, their causes and measurement.
Forestry: The science of cultivating, maintaining, and developing forests.
Ichthyology: The study of fish.
And then there's always Library Science...