Botched execution puts lethal injection’s ‘more humane’ promise under scrutiny

The failed execution of Christa Pike in Tennessee on Wednesday has added new fuel to the longstanding debate over the death penalty in the United States. It has also drawn new scrutiny to the question of whether lethal injection, the nation's primary method of execution for the past 40 years, is truly a "more humane" alternative to other ways of putting someone to death.Pike was given a death sentence in 1996 after being convicted of killing her classmate, Colleen Slemmer, in an attack she carri