You can find information & resources of science, biotechnology, chemistry, ecology, technology, science resources, mechanical engineering, earth sciences, astrophysics, nuclear & molecular at PortalScience.com
Ask Dr. Fred
scientist, researcher, and teacher Dr. Fred Bortz will answer questions about any scientific topic that interests you.
http://www.fredbortz.com/
KnowWhat.com
questions and answers provide examples of scientific principles at work in everyday life, and explain why things are the way they are.
http://www.knowwhat.com/
Mad Scientist Network
provides answers to science questions, edible and inedible experiments, a tour of the Visible Human Project, and an index of resources and web links.
http://www.madsci.org/
