A research crew found the recent "super dam," which is the length of two football fields.

In a letter to President Barack Obama, Gov. Mike Pence vowed not to comply with what he calls the "ill-conceived and poorly constructed" Clean Air Plan, unless the EPA makes significant improvements.

The DNR is seeking volunteers to monitor selected boat ramps during high-use times to record boats entering or leaving the lakes and if any aquatic species, such as plants, mussels or invertebrates, are attached.

The Indiana Department of Environmental Management is seeking proposals for ways to reduce toxic pollutants in the Great Lakes basin.

In a major encyclical, the pontiff calls on humanity to acknowledge a "sense of responsibility" for the Earth and said it was time to stop "masking problems."

New data suggest that many regions in the world are overusing their underground water supplies. And researchers aren't sure how much remains.

North America's largest salamander is disappearing, but Purdue scientists are trying to save it from extinction.

The EPA is reducing the amount of biofuel required in gasoline by 1 billion gallons. That exceeds the total amount of ethanol produced in Indiana last year.

The regulations are intended to clarify recent court decisions on which bodies of water are protected, but many farmers and congressional Republicans oppose what they call an EPA "land grab."

The environmental groups claim the U.S. Department of Transportation, Federal Highway Administration and Illinois and Indiana officials relied on inflated population, job and traffic forecasts to justify the $1.5 billion, 47-mile link between northern Illinois and Indiana.