A woman was murdered in 1974 while hitch-hiking to a Chicago art show. 50 years later, investigators found her killer

Investigators in Wisconsin used genetic genealogy to solve a 50-year-old cold case this week, charging an 84-year-old Minnesota man with murdering a woman who was found dead in 1974, authorities said.

​ Investigators in Wisconsin used genetic genealogy to solve a 50-year-old cold case this week, charging an 84-year-old Minnesota man with murdering a woman who was found dead in 1974, authorities said. Read More Breaking News, Latest News and Videos | CNN