The video "Origin of Everything: How We Discovered Germs" from the "Origin of Everything" series explores the fascinating journey of germ discovery and its impact on medical science. It delves into the history of germ theory, discussing earlier beliefs such as miasma theory, which attributed diseases to 'bad air.' Key figures like Louis Pasteur, Robert Koch, and Joseph Lister played pivotal roles, revolutionizing medical understanding by demonstrating the role of microorganisms like bacteria and viruses. The video highlights significant advances in germ-related research, including Pasteurization and the development of vaccines, such as polio and measles vaccines. These discoveries underscore the relevance of microscopic pathogens in disease prevention and treatment. The video emphasizes how scientific exploration fosters advancements in public health and continues to inspire modern research. This educational content effectively bridges past discoveries with contemporary practices in microbiology and immunology.