ck loop that 
accelerates the rate of warming that is going on. So we have the native 
populations in Alaska now having to move their villages because of the 
collapse of their coastline. And they are seeing the day when they may 
not be able to hunt for seals any more because the ice is not coming 
close to the shoreline to support the sea life.
  West Nile virus. You have seen these maps that show where West Nile 
virus has invaded the United States. It is not an accident that some of 
these diseases are 