Three first-place awards recognized The Frontier’s in-depth coverage of environmental violations, illicit marijuana networks and gaps in care for vulnerable Oklahomans.

Century Aluminum paid a settlement and fines tied to emissions issues as it pitches a new facility near Tulsa that it says ...

The Pardon and Parole Board rejects recommending clemency for a man sentenced to death for killing his ex-girlfriend and her ...

In a new Listen Frontier episode, councilors break down the moratorium, the tradeoffs and what success looks like when it ends.

Oklahoma took on an ambitious project to catalog all of the state’s injection wells, which shoot toxic waste generated by oil drilling back into the ground. Despite records showing risk of drinking ...

Oklahoma organizations serving abused children and domestic violence survivors have lost up to 80% of their federal support, even as demand continues to rise. Executive Director Kylie Turner, left, ...

From Pryor to Stillwater and Muskogee, local officials say supplies are sufficient, even as Google alone used more than 1.1 billion gallons in a single year. Cooling towers at Google’s data center in ...

State regulators discovered strong signs of oil pollution, including high levels of salt and toxic metals, in one family’s drinking water. But for two years, they repeatedly delayed basic tests to ...

State regulators are reviewing a proposal to expand sand mining over the Arbuckle-Simpson aquifer, despite Oklahoma’s moratorium on new mines in the area. The entrance to a mine outside of Roff, ...

A wave of big data centers is triggering a scramble for new electricity generation. OG&E and PSO are pushing to charge ratepayers more as they race to keep up. Construction has begun on the Project ...

The reopening of a private prison in a small Oklahoma town will bring hundreds of jobs, even as CoreCivic faces national scrutiny for alleged mistreatment and isolation of immigration detainees.