New rules on soot may soon be on the way and will likely stir up the long-standing controversy over air pollution from particulate matter. The latest TipSheet has the backstory on the pending regulations, reviews human health impacts and offers a range of story ideas and reporting resources for environmental journalists to tell the story on a local and regional basis.

Millions of Americans rely on their own onsite wastewater treatment, commonly known as septic systems. And many of those systems are connected to private wells. But unless they are properly sited, designed, built and maintained, they can contaminate drinking water, bringing dangerous waterborne illnesses. The latest TipSheet explains how to turn this often ignored issue into a local story.

A milestone legal challenge soon to be decided by the U.S. high court could severely limit how the U.S. government regulates the greenhouse gasses that cause climate change. The new Issue Backgrounder takes a look at West Virginia v. EPA, its legal implications, the politics behind it and what it would mean for efforts to curb future impacts of global warming.

An intriguing portal to the vast data resources of the U.S. Environmental Protection Agency — the Environmental Dataset Gateway — could lead to many hidden story ideas, suggests the latest Reporter’s Toolbox. Find out more about the EDG and consider a handful of possible angles, including PCB transformer registrations, precipitation, heat-related hospitalizations and chemicals in consumer products.

The public’s right to know about toxic and hazardous chemicals is currently limited by trade secret rules that no longer serve any true purpose, argues the new WatchDog Opinion column. And a pending federal rulemaking is an opportunity for journalists to make the case to draw back the curtain, for the sake of their reporting and so that they can better cover their communities’ risks.

An annual list of endangered rivers is out, but with it the journalism just begins, since there are numerous troubled river systems, most likely including one near you. The latest TipSheet details how the endangered river list can serve as a template for local reporting and provides story ideas, questions to ask and resources to tap for your coverage.