The spread of people to Australia a theory now highly disputed The spread of people to Australia debate Australia The spread of people to Australia at least 50,000 years at least 50,000 years made that crossing a theory now highly disputed Australia at least 50,000 years before people started recording events on stone and paper. "The spread of people to Australia" "The spread of people to Australia" "The spread of people to Australia" una investigación en curso en un refugio de roca at least 50,000 years debate