text: These are rotating machines.  Rotating machines wear.  To reduce the wear we continually pump them full of lubricants.  
  
  Guess what these lubricants are made from?  (Petroleum products)
  
  Guess where these lubricants end-up?  (In the environment)
  
  Guess what one of the biggest environmental concerns with off-shore wind is?  (Petroleum products in the water.)