California fights Monsanto on labels for popular weed killer

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  • Containers of Roundup, left, a weed killer is seen on a shelf with other products for sale at a hardware store in Los Angeles on Thursday, Jan. 26, 2017. A battle over the main ingredient in Roundup, the popular weed killer sprayed by farmers and home gardeners worldwide, is coming to a head in California, where officials want to be the first to label the chemical, glyphosate, with warnings that it could cause cancer. Chemical giant Monsanto has sued the nation's leading agricultural producer, saying state officials illegally based their decision for warning labels on an international health organization.  (AP Photo/Reed Saxon)

    Containers of Roundup, left, a weed killer is seen on a shelf with other products for sale at a hardware store in Los Angeles on Thursday, Jan. 26, 2017. A battle over the main ingredient in Roundup, the popular weed killer sprayed by farmers and ... home gardeners worldwide, is coming to a head in California, where officials want to be the first to label the chemical, glyphosate, with warnings that it could cause cancer. Chemical giant Monsanto has sued the nation's leading agricultural producer, saying state officials illegally based their decision for warning labels on an international health organization. (AP Photo/Reed Saxon) (The Associated Press)

  • Containers of Roundup a weed killer is seen on a shelf at a hardware store in Los Angeles on Thursday, Jan. 26, 2017. A battle over the main ingredient in Roundup, the popular weed killer sprayed by farmers and home gardeners worldwide, is coming to a head in California, where officials want to be the first to label the chemical, glyphosate, with warnings that it could cause cancer. Chemical giant Monsanto has sued the nation's leading agricultural producer, saying state officials illegally based their decision for warning labels on an international health organization. (AP Photo/Reed Saxon)

    Containers of Roundup a weed killer is seen on a shelf at a hardware store in Los Angeles on Thursday, Jan. 26, 2017. A battle over the main ingredient in Roundup, the popular weed killer sprayed by farmers and home gardeners worldwide, is coming to ... a head in California, where officials want to be the first to label the chemical, glyphosate, with warnings that it could cause cancer. Chemical giant Monsanto has sued the nation's leading agricultural producer, saying state officials illegally based their decision for warning labels on an international health organization. (AP Photo/Reed Saxon) (The Associated Press)

A battle over the popular weed killer Roundup is playing out in California, where officials want the product to carry labels warning that it may cause cancer.

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Chemical giant Monsanto has sued the nation's leading agricultural producer, saying state officials illegally based their decision for warning labels on an international health organization.

Attorneys on Friday will square off in a courtroom in Fresno, as the state asks a judge to dismiss the case.

Monsanto spokeswoman Charla Lord says Roundup doesn't cause cancer and the warning labels are unfounded and would drive away business.

Teri McCall says her husband sprayed the herbicide from a backpack for decades on their small farm before he died of cancer. She's says Roundup caused his illness and the warning would've saved his life.