Layers of hardened volcanic ash on the Indonesian island of Java have yielded evidence that Homo erectus reached eastern Asia by 1.5 million years ago and remained there until about 1 million years ago.
The skeletal diversity that many scientists use to divide up fossil species in our evolutionary past masks a genetic unity that actually encompassed relatively few species, contend researchers in an opposing camp.
Large-scale changes in climate and habitats may have sparked the evolution of many new animal species in Africa beginning 7 million to 5 million years ago, including a string of new species in the human evolutionary family.
Prehistoric human skulls found in Brazil share some traits with modern Africans, leading a Brazilian scientist to theorize that Africans rather than Asians first arrived in the Americas sometime before 11,000 years ago.
The American Anthropological Association has launched a formal inquiry into the highly publicized allegations of scientific misconduct by anthropologists and others working in South America among the Yanomami Indians.