rom, and my numbers may not be correct, if you want to 
check this, you can go on a Web site called realclimate, it is either 
dot-org or dot-com, which should give you the numbers. But it is a 
logarithmic scale. You can see it has gone from 8.5 to 8.2 or 8.1.
  Now, that does not sound like much, but it is a logarithmic scale, 
which means about a 30 percent change, which is significant. And that 
is significant because life in the ocean, our coral reefs or shellfish, 
or anything that makes calcium-based