This site, part of which is an adaptation of the sixth edition of Professor Emeritus John W. Kimball's Biology, is a hypertext dictionary specializing in cell and molecular biology, from absorption spectrum to zygote. Each entry may contain a definition, cross links to other definitions, or mini-essays about the topic. The mini-essays are the most effective part of the site, dealing with their...

An electronic version of this journal from the American Chemical Society is available for free through June 30, 2001. Nano Letters is ACS's newest journal. It deals with "physical, chemical, and biological phenomena, processes and applications of structures within the nanoscale range."