The child went missing while playing near his home in 1988 and the cold case was solved in 2021 using new DNA technologies — On May 15, 1988, Eight-year-old Joshua Harmon was playing in the woods behind the Roswell, Georgia, apartment complex. He was still exploring the area. The family had only moved in three weeks ago. It was a warm evening, and many children were playing in the area. He loved nature, and…