ChemLDplus

ChemLDplus is a database that contacts structures, properties, and more for 370,000 chemicals.

Electronics for Beginners and Intermediate Electronics

This site offers two extensive texts for beginning and intermediate electronic users.

Exploratorium Ten Cool Sites

Exploratorium Ten Cool Sites lists the "top" ten web sites for the science fields of astronomy, chemistry, earth science, history, invention, life sciences, natural history, etc.

Extreme Science

Extreme Science lists the highest, lowest, strongest, greatest, coldest, and other extremes in the natural world.

Physical Science Information Gateway

An annotated directory of Internet resources for the physical sciences, including physics, astronomy, chemistry, earth sciences, materials, science policy, and science history.

Science.gov

"Science.gov is a gateway to authoritative selected science information provided by U.S. Government agencies, including research and development results."

Timeline Science

Timeline Science "celebrates 1000 years of scientific thought in the period 1000 to 2000. During this period our understanding of the world has changed completely - from unquestioning belief in religious teachings to a demand that knowledge should be based on observations and tested by experiment. The timeline provides a way of exploring this change in our way of understanding the world."

ToxMap

This site displays where the toxic chemicals are in your community.

WhyFiles

WhyFiles takes an electronic look at the science behind the news.  This site offers beautiful pictures and easy explanations of recent   happenings in the world of science.  Use the search button to locate past topics that you might be interested in.