Nearly half the states have increased fuel taxes in the past five years, suggesting it's perhaps not the political risk it was once thought to be.
A utility's novel attempt to force farmers to curb pollution in rivers failed. Now the utility is on the hook for millions of dollars to protect the region's drinking water.
After a natural disaster hits the California city, the environmental department is among the first on the ground.
States and localities are wary of the president's support for the Build America Bonds program.