new photo blog

i started this blog in 2006, and it's shifted along with my interests through the years. it's been witness to a lot of learning for me...

still, i feel that i need a home for my photography -- so from now on, i'll be posting my pictures on the journal on my reworked website. if you like my photos, you might decide to follow me there!

my first post is here -- check it out!

as for this blog, i'm not sure what will happen. i don't think i'm willing to let it go, and certainly i'll keep it as an archive, but i need some time to figure it out.

for those of you that pop in from time to time, thanks for the visits and encouragement.

Saturday, March 06, 2010

a shadow biosphere: life as we don't know it

on timesonline:

'mono lake has a bizarre, extraterrestrial beauty. just east of yosemite national park in california, the ancient lake covers about 65 square miles. above its surface rise the twisted shapes of tufa, formed when freshwater springs bubble up through the alkaline waters.

felisa wolfe-simon, a geobiologist, is interested in the lake not for its scenery but because it may be harbouring alien life forms, or “weird life”. mono lake, a basin with no outlet, has built up over many millennia one of the highest natural concentrations of arsenic on earth. dr wolfe-simon is investigating whether, in the mud around the lake or in the water, there exist microbes whose biological make-up is so fundamentally different from that of any known life on earth that it may provide proof of a shadow biosphere, a second genesis for life on this planet.'


'dr wolfe-simon has theorised that there may be life that chose an “evolutionary pathway” to utilise arsenic. if such microbes existed, it could suggest that life started on our planet not once but at least twice. in turn this would help to support the idea that life is much more likely to have started elsewhere in the galaxy.'

on

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