Jurors say Roundup contributed to a 2nd man's cancer. Now thousands more cases against Monsanto await

Monsanto and thousands of plaintiffs are at odds over whether Roundup weedkiller can cause cancer.

(CNN)A federal jury dealt a huge blow to Monsanto, saying its popular weedkiller Roundup was a substantial factor in causing a California man's cancer.

It's the second time in eight months that a jury has reached such a decision.
But Edwin Hardeman's case against Monsanto is the first to be tried in federal court. And thousands of similar cases are still pending at the federal or state level.
    Edwin Hardeman claims Roundup caused his cancer. A federal jury in San Francisco sided with him.
    "We are very pleased that the jury unanimously held that the Roundup caused the non-Hodgkin lymphoma," Hardeman's attorney Jennifer Moore said.
    "It was a hard, long-fought battle against Monsanto. And for Mr. Hardeman to have his day in court and to show that Roundup does cause cancer."
    But this trial isn't over yet. While the first phase focused on whether Roundup caused Hardeman's cancer, the second phase -- which begins Wednesday -- focuses on whether Monsanto is liable.
    Bayer, the parent company of Monsanto, insists that glyphosate -- the key ingredient in Roundup -- is safe.
    "We are disappointed with the jury's initial decision, but we continue to believe firmly that the science confirms glyphosate-based herbicides do not cause cancer," Bayer said in a statement.
    "We are confident the evidence in phase two will show that Monsanto's conduct has been appropri