Books on these topics can be found in the non-fiction section of the library, in the number range:
100 (Philosophy and Psychology) 300 (Sociology, Anthropology and Family Studies) 600 (Health, Physical Education)
You can also search in the online library catalog by the specific topic you are interested in.
You will find books like these: (Listed as title, author, call #)
Skull Wars: Kennewick Man, Archaeology, And The Battle For Native American Identity
by David Hurst Thomas
Call number: 970.0049 THO
Encyclopedia of Obesity and Eating Disorders
Dana K. Cassell and David H. Gleaves.