Loren Corey Eiseley (September 3, 1907 – July 9, 1977) was a highly respected anthropologist, science writer, ecologist, and poet. He published books of essays, biography, and general science in the 1950s through the 1970s.
Eiseley is best known for the poetic essay style, called the "concealed essay". He used this to explain complex scientific ideas, such as human evolution, to the general public. He is also known for his writings about humanity's relationship with the natural world; these writings helped inspire the modern environmental movement.