The watershed that flows into the Ohio River covers most of Indiana, more than a dozen other states and at least 40 tribal nations.

Coke is a product made from coal that's used in steelmaking. Coke ovens emit harmful chemicals like benzene, which causes cancer.

Indiana had more water quality "success stories" than any other state last fiscal year. The Environmental Protection Agency designates a river, lake or stream a "success story" if the water significantly improves after once being too polluted for things like swimming, fishing or hosting aquatic life.

The regional grid that serves Indiana needs more reliable energy, fast — so its grid operator is letting some power sources speed through its connection process.

The Biden administration put out rules last year to help control toxic coal ash in old, unused ponds that hadn't had federal oversight before. But an analysis by the group Earthjustice shows some utilities and landowners might not be following the law.

Southside residents trying to ward off development of an urban forest are running out of options and allies. The City-County Council voted June 9 to uphold a rezoning approval for what could become a new neighborhood in Perry Township.

Thin, flexible plastics — like plastic bags, food wrap and packing material — are among the least likely to get recycled. They get tangled up in the machinery at recycling facilities and can break the equipment.

Local wineries are preparing for an insect with a benign-sounding name but one whose potential for damaging grapevines could force them to outsource grapes or raise prices.

Two consumer advocates are split on Duke Energy's proposal to close the Cayuga coal plant. But they both said a new, $3 billion natural gas plant isn't the right thing for Duke's customers.

All 18 environmental justice employees at the regional Environmental Protection Agency office in Chicago have received layoff notices. It's part of the Trump administration's efforts to close EPA environmental justice offices around the country.