Scientists Discover Two 'Ghost' Human Ancestors Hidden in Modern DNA

Buried within the genomes of every living human are faint but measurable traces of people who vanished long before history began — not the Neanderthals or Denisovans we have come to know, but two entirely unnamed lineages whose existence was only legible through the mathematics of inheritance. Researchers at UC Berkeley, using a computational method called TRACE, have read backward through time in the DNA of hundreds of living people and found genetic signatures pointing to a ghost ancestor who walked alongside our forebears in Africa more than 50,000 years ago, and a super-archaic population