Our DNA is made of millions of combinations of the genomes that create the human body. Even the smallest changes in these sequences, or in how they act, can change the functioning of the whole body ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. In 1976, workers excavating a tunnel for the Toronto subway system ...

In a "20/20" special report, David Muir weaves together two decades-long probes. In 1988, 19-year-old Cathy Swartz was a young mother living with her fiancé Mike Warner and her 9-month-old baby ...

Raymond "DJ Freez" Rowe is charged in the 1992 death of a Pennsylvania teacher. It was the gruesome murder case that had stumped Lancaster County, Pennsylvania, authorities for more than two decades.