Martha Lillard, the last U.S. polio patient using an iron lung, has died at 78 in Oklahoma. "They told her she wasn't supposed to live past 20 years old," her sister said.

Tens of millions of dollars are potentially on the line, with the federal government demanding Oklahoma cut down on errors in its food assistance program.

A push is underway to lower the amount of screen time Oklahoma students have every day while in classrooms.

Tens of millions of dollars are potentially on the line, with the federal government demanding Oklahoma cut down on errors in its food assistance program.

How are vacancies filled in the U.S. Senate? It varies by state.