Brain size increased gradually within each ancient human species rather than through sudden leaps between species.

A tiny skeleton, unearthed from Triassic-aged rocks in a quarry near Bristol, is at least 205 million years old and the ...

Modern humans, Neanderthals, and other recent relatives on our human family tree evolved bigger brains much more rapidly than ...

Once inside the body, HIV persists because of its remarkable ability to hide within healthy CD4 T cells, where it can lie ...