Affiliates

H2O, the chemistry fanlisting  e=mc^2, the physics fanlisting

Periodic Table Resources

Wikipedia ("Encyclopedia" article)
WebElements Periodic table (Basic table with details about each element)
The Visual Elements Periodic table (Very pretty, if nonorthodox, interactive table)

Credits

Interwrite backgrounds (P. table image)
Aethereality (Lily image)
CodeGrrl (Mail form and fanbase scripts)