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This week, an arrest was made in a 20-year double murder case gone cold. The victims were two 17-year-old Alabama girls. The big break for police: results from a DNA ancestry test. Police arrested 45-year-old Coley McCraney through genetic genealogy, which used his DNA to find relatives. Investigators say they were inspired by the arrest of the Golden State Killer back in April, when police used genetic genealogy to link 72-year-old Joseph James DeAngelo, to at least 13 murders and more than 50 rapes in California during the 70's and 80's. Police used that same technology to arrest men responsible for other unsolved cases that dated back to the 1970’s. "Well over the years, you think about it all the time. I don't think that ever leaves anybody that was working then. It never left your thoughts,” says retired Newport Beach Police Officer Stan Bressler of unsolved cases. So, how are police able to use genetic genealogy results to solve these cases? “We get DNA from a crime scene,” says Ellen Greytak of the first step. Greytak works with Parabon NanoLabs, which helped police arrest suspects in 1,000 years of cold cases. She says her company uploads the DNA to the genealogy database GEDmatch, which is separate from companies like Ancestry.com and 23andMe.“So, they have over a million people in that database and what's returned is basically a list,” Greytak explains. “Here are the people…who share the most DNA with your unknown person.” Then, genetic genealogists step in, building family trees and then narrowing down suspects based on information. “So we know where the crime happened; we know when it happened,” Greytak says. “That limits the age range. You know the person might have lived nearby, but not always.” The information is then handed off to police, who often conduct a traditional DNA match, before making an arrest. Still, some groups are concerned about privacy. However, Greytak says anyone can choose to opt out.“They choose to either set their data to private in GEDmatch, so they're not part of searches, or to take their data down. You know they have full control over that,” Greytak explains. 2151

Tonight marks the fifth Democratic debate of the 2020 election cycle, and the stakes are starting to rise as the Iowa caucus and New Hampshire primary nears.Ten candidates have qualified for this debate, down from last month's debate of 12 candidates.CLICK ON THE PLAYER BELOWThe candidatesFormer Vice President Joe BidenNew Jersey Sen. Cory BookerSouth Bend, Indiana Mayor Pete ButtigiegHawaii Rep. Tulsi GabbardCalifornia Sen. Kamala HarrisMinnesota Sen. Amy KlobucharVermont Sen. Bernie SandersEntrepreneur Tom SteyerMassachusetts Sen. Elizabeth WarrenEntrepreneur Andrew Yang 591

The US economy is strong, yet discount retailers are booming. That's why "extreme value" supermarket chain Grocery Outlet believes its the perfect time to hit the public market.The 73-year-old discount supermarket has grown to more than 300 stores in the United States, most of them on the West Coast. It hopes to raise 0 million through an IPO, the company said in a 382

Toni Harris is an undersized defensive back with huge dreams. The free safety wants to be the first woman to play in the NFL.While that may be a long-shot wish, she is going to be the first woman -- other than a kicker -- who will attend college on a full football scholarship. Harris, 22, signed a letter of intent this week with Central Methodist University in Fayette, Missouri, to play at the NAIA school."I always try to push myself every single day and keep my faith in God to let me go as far as I want to go," she said earlier this month before Toyota aired an advertisement about her during the Super Bowl.The ad focused on how people underestimate her as a player."I've never been a big fan of assumptions," she says in the spot.According to 764

The US Centers for Disease Control and Prevention is telling doctors to be on the lookout for a polio-like illness that tends to peak in the late summer and early fall, shedding new light on the illness in a report released Tuesday.Last year saw the highest number of cases of acute flaccid myelitis so far -- 233 confirmed cases in 41 states. It tends to spike between August and October every other year, including outbreaks in 2014 and 2016 with 120 and 149 cases, respectively. So far this year, 512