Oklahoma

This year could see a wave of state tax hikes on gasoline and diesel. Oklahoma is one of about a dozen states seriously considering increases.

The magnitude 5.0 quake damaged buildings in Cushing, Okla., the largest commercial crude oil storage center in North America. No damage to oil storage facilities or nearby pipelines was reported.

Seconds before Terence Crutcher was shot, police dashcam and helicopter footage shows, he had walked to his car with his hands held over his head.

In 2014, after disastrous spills and opposition from environmentalists, the EPA imposed new rules on the storage of coal ash. Two towns are pushing back against different ways of storing the ash.

Mary Fallin's office released a statement, touting her anti-abortion credentials but saying the bill was "vague and would not withstand a criminal constitutional legal challenge."

Robert Bates, a volunteer with the Tulsa County Sheriff's Office in Oklahoma, killed Eric Harris in a sting operation last year. The jury found him guilty of second-degree manslaughter.

"My ears just about burned on that one," journalist Val Castor said. The Woodward County blaze is 20 percent and spans nearly 90 square miles.

NBA stars in the making? Check. Upset potential? Check. Academic fraud scandals? Double check. Saturday's NCAA Final Four games have it all. Here's what you need to know.

The state of Oklahoma saw more than 800 earthquakes with magnitude of 3 or greater in 2015.

Oklahoma's earthquake boom is now a national security threat. No damage has been reported, but operators at the hub are on high alert for a disruption that would ripple through the U.S. energy market.

Oklahoma set a state record last year with more than 5,000 earthquakes. This year, the state is poised to have even more. Now oil and gas regulators have taken notice and are working to curb them.

This is the second botched execution in a row for the state. Clayton Lockett died of a heart attack last year after a phlebotomist misplaced an IV line.