Life on Mars in the Yahoo! Directory

NASA's Mars Exploration Program
NASA's home for all Mars missions past, present, and future. Aims to determine if life ever arose on Mars, characterize its climate and geology, and prepare for human exploration.
marsprogram.jpl.nasa.gov
Malin Space Science Systems: Life on Mars
Describes the Viking biology experiment.
barsoom.msss.com/http/ps/life/life.html
BioMARS
A University of California Berkeley-led NASA Astrobiology Institute working to identify the types of sites on Mars that experienced long-term fluid flow as these may be, or have been, conducive to life.
cips.berkeley.edu/biomars/NAI_1.html
MarsNews.com: Life on Mars?
Ongoing collection of news articles addressing the question as to whether or not life has, or does, exist on Mars.
www.marsnews.com/focus/life
Exobiology in the Solar System & The Search for Life on Mars (PDF)
Report from the ESA Exobiology Team Study 1997-1998.
esapub.esrin.esa.it/sp/sp1231/sp1231.pdf
Dartmouth College: Humbio 01 - Life on Mars?
Course examining some of the key questions about Mars.
www.dartmouth.edu/~humbio01