Family members, lead poisoning expert testify for defense in Tanner Horner trial
Aaron Specht, an assistant professor at Purdue University with expertise in environmental health and physics, testified that he measured the amount of lead in Horner's bones and found it to be 24 times higher than that of an average person of his age. He said that the level of lead accumulation indicates that Horner had significant exposure to lead as a child, which could lead to neurological problems.