Researchers hypothesize it descended from a slave-making species that lost its own workers because other ants worked for them, with the loss of male production occurring later in evolution ...

The human genome is a rich, complex record of migration, encounters, and inheritance written over thousands of millennia. Genomic research by members of Sarah Tishkoff's lab at the University of ...

Geneticists have a better understanding of how prehistoric pairings unfolded, with new research suggesting they were mostly between male Neanderthals and female humans.