How can the smallest things on Earth have such a big impact? That's exactly what microbiologists study! From viruses to mold, the tiny organisms that microbiologists focus on can help answer important, everyday questions like why someone is sick or how to bake a better loaf of bread. Including the schooling, training, and daily tasks of these incredible scientists, the main content also covers information readers encounter in the science classroom, such as how bacteria grow and methods for experiments.