Arizona could go either way this presidential year -- that's what makes it a swing state. But it could also go either way on down the state's ballot, right to a question on abortion rights.
Supporters of death row inmate Robert Roberson say stae is about to execute an innocent man. Roberson was convicted of shaking his daughter to death. "Shaken baby syndrome" is largely discredited.
NASA has just launched a mission to investigate a far-off world that’s full of water. It’s going to Europa, a moon of Jupiter that's made of lots of ice that covers a huge ocean.