STEM (Science, Technology, Engineering, and Mathematics) All in a Drop: How Antony van Leeuwenhoek Discovered an Invisible

In seventeenth-century Netherlands, cloth dealer Antony van Leeuwenhoek discovers a world too small to see with the unaided eye. After making his own microscope, he becomes the first person to observe microbial life in and around people. The book explains that microbes exist in places such as soil, oceans, snow, and human bodies, while tracing how his observations challenged what people believed existed. Notes, a glossary, sources, and a timeline extend the biography.