(SANTA ROSA PRESS DEMOCRAT) — Roundup weed killer was a substantial factor in a Sonoma County man’s cancer, a jury determined Tuesday in the first phase of a trial that attorneys said could help determine the fate of hundreds of similar lawsuits.

The unanimous verdict by the six-person jury in federal court in San Francisco came in a lawsuit filed against Roundup’s manufacturer, agribusiness giant Monsanto. Edwin Hardeman, 70, was the second plaintiff to go to trial out of thousands around the country who claim the weed killer causes cancer.

Note: Read our discussion guidelines before commenting.