Kathleen Folbigg, a 56-year-old woman who had been found guilty of killing her four children in 2003, has had her convictions overturned by the New South Wales Court of Appeals. The pardon was granted at the direction of the New South Wales state government, based on new scientific evidence suggesting the children may have died from natural causes. This marks the end of a 20-year legal battle for Folbigg, who was released from prison in June, and her exoneration has been welcomed by many.