ScienceDirectory.info is a leading science website including agriculture, metrology, industrial engineering, earth sciences, geography, mathematic, aquaculture, aerospace and more.
Mars or Bust!
Mars news site.
http://www.marsorbust.com/
MarsHome.org
The Mars Homestead Project - building the first permanent settlement on Mars utilizing local materials.
http://marshome.org/
Martian Soil
Daily weblog covering all the latest news in international Planet Mars exploration efforts.
http://www.martiansoil.com/
New Mars: A Journal of the Martian Frontier
Published by the Mars Society; its archives contain significant articles on the rationale of colonization.
http://www.newmars.com
The Mars Millennium Project
An official White House Millennium Council youth project challenging students across the nation to design a community for the planet Mars.
http://www.mars2030.net/
West to Mars
An inspirational site devoted to pioneering on Mars.
http://www.marswest.org