could you please ellaborate a little more about this: "Photosynthesis needs to combine the energy of two photons to kick off the process" it reminds me of the double-slit experiment from quantum mechanics.. could photosynthesis be viable only because of the interference patterns of these two photons? thanks.. --- Norbert Hoeller <[log in to unmask]> wrote: --------------------------------- I would like to follow up on Julian Vincent's "survivalstrategy" post of May 1st. Is energy used in at most 5% of biologicalsolutions because energy is one of the most constrained resources? JaredDiamond quotes from an essay by Jack Goldstone that pre-industrial societieswere limited by the amount and concentration of energy. Photosynthesisneeds to combine the energy of two photons to kick off the process. ____________________________________________________________________________________ Sucker-punch spam with award-winning protection. Try the free Yahoo! Mail Beta. http://advision.webevents.yahoo.com/mailbeta/features_spam.html