https://tributariesradio.com/wp-content/uploads/2016/07/tributaries7-3-2016callemanmayancalendar.mp3

With the Mayan Calendar as his guide, CARL JOHAN CALLEMAN PhD describes what inspired the ancient Egyptians, Sumerians, Jews and Mayans, outlining a new theory about the historical, psychological, geophysical, and neurological roots of the human mind. The Global Mind and the Rise of Civilization, is discussed here.