A 51-year-old Florida man allegedly executed six people across 200 miles in a four-hour rampage that began with a romantic dispute and ended with his suicide, leaving investigators puzzled about why he targeted a second cluster of victims in a gated community hundreds of...

Nine experienced Soviet mountaineers fled their tent half-dressed into sub-zero temperatures, abandoning their only shelter to die in the frozen Ural Mountains with missing eyes, tongues, and injuries comparable to a car crash—a mystery that haunted investigators for six decades until science revealed what...