Steve Davies

The Trump administration’s proposed new definition of “Waters of the United States” in the Clean Water Act is either a radical policy shift that misinterprets Supreme Court precedent and will leave up to 70 percent of tributaries and half the nation’s wetlands unprotected, or it’s a constitutionally valid approach to regulating the nation’s waters that preserves the states’ lead role over water pollution control and land use planning.

The Animal and Plant Health Inspection Service has reopened the comment period until April 30 on a 2017 proposal to use a protein found in spinach to combat citrus greening disease.

A new federal report on glyphosate’s toxicological effects will likely play a role in the ongoing debate — both in the court of public opinion and in courts of law — over the safety of the principal ingredient in Roundup.

The public trust doctrine, an old, rarely used but potentially powerful legal weapon, is being employed to try to force Iowa to curb pollution from farm runoff.