Humans owe our impressive intellect to our large brains, which are unusually sophisticated thanks to evolution. The first surge in our brain size occurred between 2 million and 800,000 years ago, when ...

Human evolution has long been tied to growing brain size, and new research suggests prenatal hormones may have played a surprising role. By studying the relative lengths of index and ring fingers — a ...

Until Homo floresiensis was discovered, scientists assumed that the evolution of the human lineage was defined by bigger and bigger brains. Via a process called encephalization, human brains evolved ...

LONDON — The size of human beings has increased over the past century thanks to better health and nutrition — but this change has not occurred equally among men and women, a new study shows. Men have ...