Monday, April 7, 2008

What is that eerie glow?

It may not mean she’s glad to see you it may mean she’s been living in the “stack shadow” of a coal-fired plant. Just when the news couldn’t get any worse for the “clean coal” boys there’s a story in the Scientific American by Mara Hvistendahl about research done in 1978 In a 1978 paper for Science, J. P. McBride at Oak Ridge National Laboratory (ORNL) and his colleagues looked at the uranium and thorium content of fly ash from coal-fired power plants in Tennessee and Alabama. Coal contains uranium and thorium which are both radioactive elements. They are trace amounts and in their natural state are not a problem but when burned into “fly ash” the uranium and thorium are concentrated at up to 10 times their original levels. For the story….