Mathematics News Vertical Portal
Science, Math, Directories - Mathematics News Vertical Portal. News and links related to mathematics and education.
http://www.mathematics.it/
Green Building Construction
Science, Math, Directories - Cenius. News, dictionary, notes, biographies of mathematicians, quotes, resources and links.
http://cenius.net/
MathGuide
Science, Math, Directories - MathGuide. Directory of on-line mathematics, mainly research literature.
http://mathguide.de/