Bacteria for greening Mars?

My colleague Bob Fosbury from ESO shares (among many other beautiful and instructive photographs and anecdotes) and interprets intriguing spectra of samples of Atacamanian halites on his flicker account. These halites are populated by extremophiles, bacteria referred to as Chroococcidiopsis. Most interestingly, chlorophyll fluorescence between about 640nm and 780n can be clearly seen, opening possibilities to eventually search for chlorophyll signatures through fluorescence spectroscopy (and not, as usually suggested, through reflection).

Atacama halite and spectra

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