Microbe wakes up after 120,000 years
"Bacteria may hold clues to what life forms might exist on other planets."
If nothing else, it shows that there is at least a rudimentary method of survival, one upon which other bacterium might build for an even more severe environment.
It there's not evidence of life having lived on Mars I'll be very surprised. It's got yer former water and seas, it's got yer permafrost, it's got yer ice. And it had the same opportunity for Panspermia that the Earth did.
Arf