There’s no more stimulating way to end a busy week than a good scientific controversy!

And we are NOT talking Global Warming  this time!

“More than a dozen researchers voice their  concerns  about a 2010 paper that claims bacteria can use arsenic in place of phosphorus in its DNA and other biomolecules”

Check out this story in Science from June 2, 2011 and associated links

http://the-scientist.com/2011/06/02/arsenic-based-life-debate-continues/

So, which side are you on ????