EDTA is a chemical that is added to certain foods and beverages to help them keep their color and flavor. For instance, it is sometimes added to: 1  Sodas. 2  Canned fruits and vegetables. 3  Non-nutritive sweeteners. 4  Condiments such as mayonnaise. 5  Salad dressings.
Herman Wallace was serving a 50-year sentence for armed robbery when he was convicted, along with fellow inmate Albert Woodfox, for the murder of a prison guard at the Louisiana State Penitentiary in 1972. Wallace spent 41 years in solitary confinement.
Mr Woodfox is thought to have endured the longest stretch in solitary of any US prisoner, spending 23 hours a day in a six-by-nine-foot cell for 43 years, and being allowed only one hourâs daily exercise in a fenced concrete yard where he was kept shackled and alone.