Information on the Beagle 2 Mars Lander for launch in 2003 aboard the European Space Agency's Mars Express mission, with instrumentation developed at Leicester University to search for evidence of extant or extinct life.
The discovery of Mars meteorite ALH84001 and debate about the findings of ancient Martian life contained within. The Viking experiments and the debate about the results of the Labeled Release experiment. The implications if Mars life is found.
There's a rhythm in the release of radioactive-labeled gas in the experiments done by the Viking-Landers in 1976. This cycle could be the circadian rhythm of bacteria.