Free Admission Thursday at Natural History Museum - see INFO below. Explore a diverse range of programs and exhibitions highlighting and celebrating our vast collections and Los Angeles communities. NHMLAC is a collections-based research and educational institution that relies on science to enhance our knowledge of the natural world. The goal of science is to acquire ever-increasing understanding of the objects and events we encounter. Such understanding is obtained through the continual critical evaluation of testable hypotheses and theories. Evolution is a central concept in modern science. Evolutionary theories are supported by evidence from such diverse fields as genetics, paleontology, chemistry, and physics. The use of evolutionary biology as a means of acquiring understanding is consistent with the overall goal of science, as the theories involved are available to critical evaluation. Evolutionary biology allows us to explain the amazing diversity of life on Earth today and how diversity has changed over time. More Info below.