Endangered Species: Includes links to Marine Biology

Mrs. McGujire's Wikipage with links for endangered species

Periodic Table:

Dynamic Periodic Table

Research Open Access Articles/Databases :

arXiv: Open access to 695,845 e-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics
BioMed Central: Publisher of 220 peer-reviewed open access journals
Chemistr Central: Chemistry Central publishes peer-reviewed open access research in chemistry.
Scirus: Comprehensive scientific research tool
WordwideScience.org: Searches 52 Databases and portals from 56 countries. I