The article focuses on Doug Yanega, an expert known as a “human search engine” for his ability to identify insect species with remarkable accuracy. Working at UC Riverside’s Entomology Research Museum, he helps manage a collection of over four million specimens that serves as a vital record of global biodiversity. His work is especially important because scientists have identified only about one million insect species out of an estimated forty million, while populations are rapidly declining due to habitat loss and climate change. Yanega emphasizes that identifying species is the first step in protecting them, since insects play essential roles like pollinating crops and supporting food chains. He uses careful observation and memory to compare tiny differences between specimens, often identifying new species and assisting researchers, students, and the public. Overall, the article shows that his expertise is crucial in preserving knowledge of insect life as environmental threats continue to grow.