Upstate cattle farmer Ken Jaffe has shared the full text of an e-mail sent by Dr. Christopher Portier, head of the Center for Disease Control’s (CDC) National Center for Environmental Health and Agency for Toxic Substances and Disease Registry (ATSDR).  According to Jaffe, this e-mail “represents a major change in mainstream scientific thinking about public health risks of gas drilling.” For the first time, according to Jaffe, a federal official with responsibility for public health has stated openly that he can’t guarantee the safety of fracking, and that he has “data of concern” that makes him worried.  READ MORE