Math/Science
Societies and Departments:
American Mathematical Society AMS
The Mathematical Association of America MAA
Society for Industrial and Applied Mathematics SIAM
Department of Mathematics and Statistics Texas Tech
Mathematics and Computer Science web page at Jacksonville State University JSU Math page.
Clay Mathematics Institute Web Site
Steklov Mathematical Institute of the Russian Academy of Sciences Page
References:
Wolfram Research's World of Science
A math search engine MathSearch.
Pre-prints of math,physics,etc. papers xxx.lanl.gov.
A good source for information on all levels of math is The Math Forum-Ask Dr. Math. The Erdös Number Project
The Mathematics Genealogy Project
Real Algebraic Geometry:
Oleg Viro's Home Page
Eugenii Shustin Home Page
A page about Virginia Ragsdale
History:
Early uses of mathematical symbols
Hilbert's 23 Mathematical Problems
A page about Carl Friedrich Gauss
Babylonian and Egyptian mathematics
Mathematics: Ancient Science and Its Modern Fates
MacTutor History of Mathematics archive
Philosophy:
Google: Philosophy of
Mathematics
Philosophers: Main Page
Philosophy of Science and Mathematics on the Internet
On Gödel's Philosophy of Mathematics
Philosophy of Mathematics: Class Notes Dr. Carl Posy
Canadian Society for History and Philosophy of Mathematics
Stanford Encyclopedia of Philosophy Abridged Table of Contents
Gödel's Incompleteness Theorem:
Gödel's ON FORMALLY UNDECIDABLE PROPOSITIONS OF PRINCIPIA
MATHEMATICA AND RELATED SYSTEMS
Gödel's Incompleteness Theorem: comments on the importance of his work
Gödel's Theorem http://www.chaos.org.uk/~eddy/math/Godel.html
Kurt Gödel: Biography
Humor:
Doug Craigen's Math Humor Links
Mathematical humour
Mathematical Quotations Server
Murphy's Law and corollaries
Art:
A page with many cool pictures of the Mandelbrot set Fractal Journeys.
Sekino's Fractal Gallery is another cool page of fractals.
People:
Herbert Wilf's Home Page
Stephen Grossberg Home Page
Archimedes Palimpsest
Copernicus links
Tycho Brahe page
Tycho Brahe links
Johannes Kepler links
Misc:
DNA Interactive
Webelements Perodic Table
Scientific Americans Ask the Experts
NASA Astronomy Picture of the Day Archive
Bad Astronomy Page
Scientific American Page
The Annals of Improbable Research HotAIR
Conversion of Units
Harcourt and Academic Press's Dictionary of Science and Technology
NCSA
has some cool pictures such as:
Ann Coulter 
