The video titled "Journey to the Microcosmos: How Does Yeast Make Bread?" explores the fascinating role of yeast in bread-making, a process rooted in microbiology and chemistry. Produced as part of the educational series "Journey to the Microcosmos," the video unravels how Saccharomyces cerevisiae, commonly known as yeast, transforms when hydrated and brought to life. Highlighting critical concepts like fermentation and autofluorescence, the video showcases how yeast, a microscopic organism, is essential in turning simple ingredients like sugar into bread, releasing carbon dioxide and ethanol as byproducts. It touches on the importance of yeast in brewing and baking industries and emphasizes the transformative power of microbial life. Through the lens of a microscope, viewers embark on a journey to understand the unseen forces that produce everyday foods. This video is a valuable resource for conveying the wonders of microbiology and fermentation.