The dating of these complex structures reveals that this ancient society displayed signs of modernity far earlier than scientists previously thought.
A period of abrupt climate change 12,000 years ago occurred rapidly in northern latitudes but much more gradually in equatorial regions, report researchers.
The dating of these complex structures reveals that this ancient society displayed signs of modernity far earlier than scientists previously thought.
A period of abrupt climate change 12,000 years ago occurred rapidly in northern latitudes but much more gradually in equatorial regions, report researchers.