fractracker alliance
  
  
    
      
  
  
  
      
  
  
  
    
  
    
        
    
          
              
            
            
            
        April 6, 2015 -
        
  
        Several studies examining various aspects of the controversial oil and gas drilling technique released last week turn up new evidence of problems related to a lack of public information, waste disposal and ozone pollution.