Early human evolution may have been more complex than scientists previously thought, with modern humans evolving from two ancestral lineages.

Scientists have uncovered evidence that modern humans emerged from two long-separated ancestral groups, not just one. This genetic reunion reshaped our species, introducing key traits that may have influenced brain function.

Scientists have found that 20% of our DNA may come from a mysterious ancestor, according to WP. This discovery changes how we understand human evolution. It also raises new questions about the development of our brains and nervous system.