Genetic research does not always produce tidy answers. Sometimes it reveals traces that raise more questions than they settle ...

Geneticists have uncovered a faint but persistent signal in modern DNA that points to a vanished branch of humanity, a “ghost ...

Scientists have long debated how modern humans evolved. For decades, most researchers agreed that Homo sapiens came from one ancestral group in Africa, dating back 200,000 to 300,000 years. But new ...