The story of where we come from evolves almost every year.
The story of where humans come from is growing as new evidence -- and new methods of analysis -- emerge all the time.
Hominin skull casts (L-R) Australopithecus afarensis, Homo habilis, Homo ergaster, Homo erectus, Homo neanderthalensis.
Roger Seymour/South Australian Museum
The brains of our ancestors grew larger and smarter thanks to an increase in the flow of blood to the brain
Excavations in Liang Bua, a limestone cave on the Indonesian island of Flores.
Smithsonian Digitization Program Office Liang Bua Team
New excavations at an Indonesian cave have pushed back the time the 'hobbits' disappeared to about 50,000 years ago.
Ochre is still used throughout parts of Africa as a form of sunscreen. Its uses go back 285,000 years.
Ochre has many uses. It can be used to shed information on the evolution of the modern mind.