"Jellby" <jel### [at] M-yahoocom> wrote in message
news:401d8698@news.povray.org...
>
> Copper and iron salts can be green too
> (<http://www.wqa.org/sitelogic.cfm?ID=346>).

Glad you showed that. I wasn't considering inorganic colorations.

I also think of the bacteria at Yellowstone National Park, in the hotsprings
there. Colorful stuff and not "plantlife" either. I keep using that word too
generally and used it again to mean any kind of microorganism.

Here's an article concerning Jupiter's moon Europa, about possibility of
bacteria and the colors on it's surface:
http://nai.arc.nasa.gov/news_stories/news_detail.cfm?ID=53

Bob H.

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