To the downvoters: You likely don't understand how out of control the California list of known carcinogens is. I recently went to a Fry's Electronics store, and on the path to registers were non-ironic signs reading "All items on this aisle may contain substances known to the State of California to cause Cancer, or Birth Defects, or other Reproductive Harm."

It has been pointed out that if in the State of California one were to sell the coins handed back as change after the sale, they too would require legally require a safety warning about the cancer risk. My favorite warning is that of Dharma Trading Post, a silk importer:

  "To conform to state laws, our labels make everything sound   
  like a deadly poison, even simple things like sawdust and 
  seaweed. The law says you have to warn everyone about 
  everything, regardless of how obvious, stupid or remote the 
  possibility. Anyway, we are now labeled to the "max". Please 
  don't hold it against us."

http://www.dharmatrading.com/home/safety-information.html

There are many reasons why you can legitimately be afraid of glyphosate. It's presence on California's list of chemicals requiring a Prop 65 warning should not be one of them.