Stanford Earth Young Investigators: Biodiversity (a.k.a, The History of Life Internship) is an intensive, 8-week research and learning experience for Bay Area high school students. The program combines classroom learning, field trips, and authentic scientific research. The centerpiece of the program is cutting-edge research in the field of paleobiology. Students will conduce original analyses to better understand the evolutionary history of ancient life. An important part of the program is learning how to formulate and test scientific hypotheses. New in 2018, interns will focus their efforts on a single collective research project that will study the evolutionary trends in body size, ecology, and physiology of marine animals over the past 550 million years.