Online scientific reference resource with more than 8500 encyclopedia articles, over 115,000 definitions, and suggestions for further study on specific topics
Website developed by the American Association for the Advancement of Science that provides a forum for science news from universities, medical centers, corporations and research institutes.
"Scientific American, the longest continuously published magazine in the U.S., has been bringing its readers unique insights about developments in science and technology for more than 170 years."[from publisher's site]