This handout, prepared by the USGS, provides background on the use and theory of X-ray powder diffraction. Examples of applications of this method to geologic studies are provided. Full description.

This site is a report presented as an abridged guide for laboratory technicians and students interested in X-ray powder diffraction methodology. Also included, in condensed form, are the principles of diffractometry and descriptions of clay mineralogy, plus many preparatory and interpretive procedures. Full description.

This resource features an illustrated lecture from a geochemistry course offered by Dr. Scott Wood at the University of Idaho. Topics include the Big Bang theory, the evolution of stars, the relative abundances of elements in the Universe, and some fundamental nucleosynthetic processes that explain elemental abundance patterns. The lecture presentation may be downloaded as a PDF document or a PowerPoint ... Full description.

This resource from Dr. Terry Frey at San Diego State University is an abbreviated introduction to crystallography and x-ray diffraction. Topics include an overview, crystal growth, crystal classes and symmetry, two descriptions of diffraction, experimental approaches, and other x-ray diffraction methods. Illustrations and diagrams are also incorporated into the article. Full description.

This site features Flash and Windows Media animations that illustrate various aspects of geologic history. They depict fossil cast formation, the Big Bang and earth through geologic time, the significance of isotopic dating techniques, and views of dinosaurs. These resources are suitable for use in lectures, labs, or other teaching activities. Full description.

This 3-4 week science module is designed for introductory college courses and uses data to tackle questions related to global warming. The module includes short and long term temperature trend data, along with IR spectra, concentration trend data for greenhouse gases, and information about the Kyoto Protocol. This project is tied to several NSF systemic reform initiatives in Chemistry and the ChemConnections ... Full description.

This website provides access to publications of the National Academy of Science, the National Academy of Engineering, the Institute of Medicine, and the National Research Council. This includes over 200 books a year on a wide range of topics in science, engineering, health, and policy. The site features PDF files of books, some of which are free and some available for a fee. PDF files are available ... Full description.

The Society for Chaos Theory in Psychology & Life Sciences is an international forum bringing together researchers, theoreticians, and practitioners interested in applying dynamical systems theory, far-from-equilibrium thermodynamics, self-organization, neural nets, fractals cellular automata, and related forms of chaos, catastrophes, bifurcations, nonlinear dynamics, and complexity theories to ... Full description.

This is the home page for the April 2003 NAGT workshop on Teaching Biocomplexity in the Geosciences. The workshop program has links to each PowerPoint presentation given during the workshop, as well as links to notes that resulted from each of the working group sessions. Example teaching materials from the share fair and the poster session are also linked. A field trip to Yellowstone National Park ... Full description.

The South Dakota Center for Biocomplexity Studies was established to promote integrated research in environmental systems. The Center seeks to promote federally competitive biocomplexity research by South Dakota scientists. The web site provides a list of external funding opportunities with program announcements and deadlines. The Center staff can assist in proposal preparation. The web site provides ... Full description.