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View Diary: Hansen: Nuclear power has prevented 1.8 million deaths (95 comments)

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  •  read the scientific american article i linked (4+ / 0-)

    in the post above.

    several decades is insufficient to know the long term effects from reproductive issues/population decline of a species.  

    from that scientific american article,

    a bit more on the actual isotopes found by the scientists at SUNY (stony brook university of new york)

    Madigan and his colleagues found the cesium, but they next needed to see if the levels could tell them anything about the fish’s movements. To test the radioactive tracer idea, Madigan took samples of tissue from 50 fish caught in the waters near San Diego during the summer of last year. He shipped the samples to Stony Brook University, S.U.N.Y., where a colleague analyzed them for cesium levels.

    The two cesium isotopes decay at different rates. Cesium 137 has a half-life of 30.1 years, cesium 134, 2.1 years. The entire Pacific Ocean basin still holds slightly elevated levels of cesium 137 from the nuclear weapons testing that peaked in the 1960s, but the Fukushima power plant is the only source of cesium 134. Elevated levels of cesium 134 therefore would indicate if the California-caught tuna are recent migrants from Japan. By comparing the ratio of the two isotopes, Madigan and his colleagues were able tell approximately how recently the migrants had arrived. With its shorter half-life, cesium 134 levels fall faster than those of cesium 137. A higher ratio of 134 to 137 therefore indicates a more recent immigrant.

    and, for the uninitiated, "half-life" for radioactive decaymeans that for cesium 134, the potency of the isotopes will decay by HALF in 30.1 years, then in another 30.1 years, another "half" of the potency will diminish - so we're stuck with this for more than "a few decades".

    the damage to dna damage due to radioactivity is also increased with mercury exposure (ring any bells? fish? mercury levels?)

    worried yet?  if not, you should be.

    add to this the fact that many california nuclear plants are built on major earthquake fault lines and are of the same older technology and design as fukushima

    one last point here... we STILL do not have the means to safely store and secure and deactivate the waste products from nuclear plants across the country.  burying those spent fuels under a mountain near a major fault line?  done! (yucca mountain)

    and, even the current practice of burying the spent fuel in 40' deep pools of water near the plants is now being questioned and challenged and ordered changed by the courts.

    we don't have a "tiger by the tail" - we are trying to hold onto a fire-breathing dragon!  

    nuclear is NOT the answer until we can find a way to safely defuse the waste issue!

    EdriesShop Is it kind? is it true? is it necessary?

    by edrie on Thu Apr 04, 2013 at 12:58:16 PM PDT

    [ Parent ]

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