Executions: 7 Gruesome Ways to Take a Life

execution
Illustration of a public execution in Beijing, created by Bayard, after drawing of Vaumort, published on Le Tour du Monde, Paris, 1864.

A recent execution by lethal injection that went awry has renewed interest in the protection against "cruel and unusual punishment," as guaranteed in the U.S. Constitution.

On Tuesday (April 29), convicted murderer Clayton Lockett was executed by the state of Oklahoma, but not before he convulsed on the gurney, then raised his head and said, "Something's wrong." The execution was halted, but Lockett was later pronounced dead of a heart attack by prison officials.

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Marc Lallanilla
Live Science Contributor
Marc Lallanilla has been a science writer and health editor at About.com and a producer with ABCNews.com. His freelance writing has appeared in the Los Angeles Times and TheWeek.com. Marc has a Master's degree in environmental planning from the University of California, Berkeley, and an undergraduate degree from the University of Texas at Austin.