Carey Dean Moore has been on death row for almost 40 years.
Oklahoma is one of many states attempting to move beyond lethal injection as a method of execution.
Capital punishment cases are down but five of the 23 executions this year still highlight the arguments of those who oppose the death penalty.
An opioid at the heart of America's drug epidemic will be used for death row executions in Nevada and Nebraska if the never-before-tried combination of drugs is approved.
The double execution took place days after the state ended a nearly 12-year hiatus on executing prisoners on death row.
Staring in January, Ohio will again begin executing inmates after halting the practice in 2014.
The state was unsuccessful when it first tried to execute Romell Broom in 2009.
Texas to execute Coy “Elvis Wayne” Wesbrook after spending 17 years on death row.
Georgia is slated to execute a former sailor on Wednesday for the murder and dismemberment of a fellow shipmate 24 years ago.
Only six states carried out executions in 2015.
A new report estimates that 300 people on death row served in the military.
Escamilla is scheduled to die at 6 p.m. local time by lethal injection, the 12th execution in Texas this year.
The request follows the state's chemicals mix-up in the Richard Glossip case.
Oklahoma Governor Mary Fallin issued death row inmate Richard Glossip a stay of execution on Wednesday afternoon.
His lawyers had hoped newly submitted evidence would bolster his case.
Firing squads replacing lethal injections remind us the death penalty is an ultraviolent punishment.