Biology

Animal Information Database -- http://www.seaworld.org/

Flora of North America -- http://hua.huh.harvard.edu/FNA/

Marine Biology Database -- http://www.calpoly.edu/delta.html

Natural History Web -- http://www.mnh.si.edu/

Plants Database -- http://plants.usda.gov/plants/

Whole Frog Project -- http://dsd.lbl.gov/ITG.hm.pg.docs/Whole.Frog/Whole.Frog.html

Chemistry

World Wide Web Virtual Library: Chemistry -- http://www.chem.ucla.edu/chempointers.html

ChemFinder -- http://chemfinder.cambridgesoft.com

Organic Chemistry Resources Worldwide -- http://www.organicworldwide.net/

Chemistry and Industry Magazine -- http://www.chemind.org/CI/index.jsp

Physics

American Institute of Physics -- http://www.aip.org/publications.html

Los Alamos National Laboratory -- http://www.lanl.gov/worldview/

NASA Spacelink -- http://spacelink.msfc.nasa.gov

National Institute of Science and Technology -- http://www.nist.gov

National Science Foundation -- http://www.nsf.gov

Oak Ridge National Laboratory Research -- not available at this time