Here’s what we saw this week in food news.

1. Critics of Dow Herbicide Ingredient Sue U.S. EPA Over Approval (Reuters)

A coalition of U.S. farmer and environmental groups filed a lawsuit against the U.S. Environmental Protection Agency (EPA), claiming that the agency didn’t adequately analyze the impact of 2,4-D–an active ingredient in Agent Orange–before granting approval Dow’s Enlist Duo herbicide. Farmer Jim Goodman weighed in about 2,4-D here last week.

2. There Are Antibiotics In Your Fish (TIME)

A new study published in the Journal of Hazardous Materials found residues of five antibiotics, including tetracycline, in farmed tilapia, salmon, and trout. Although the antibiotics are used to treat and prevent disease in fish–rather than to promote growth—they are often farmed in crowded pens, where illness would be common otherwise.

3.  Is Unlimited Pesticide Spraying in California’s Future? (Central Valley Business Times)

Environmental groups are opposing a plan by the California Department of Food and Agriculture (CDFA) that they say gives it the power to approve the spraying of pesticides anywhere in California, at any time into the indefinite future. It would also give CDFA the right to approve new pesticides with no public review or notice. According to the nonprofit legal group EarthJustice, the plan also “directly threatens organic farming—one of California’s fastest-growing industries—because organic farmers could be forced to spray non-organic pesticides as part of state treatment programs.”

4. A Sprinkle of Compost Helps Rangeland Lock Up Carbon (San Francisco Chronicle)