World population was at a few million people, likely below 5 million. Less than a year after these results were published another study showed that the stone circles had been preceded by wooden circles of 6-metre pine 'totem poles' dated to 8,000 B. [Based on: by Graham Hancock and Santha Faiia, Heaven's Mirror, Quest For The Lost Civilization, p. C.] in which herding and agriculture came into use, is called the 'New Stone Age' or [in Latin] the 'Neolithic Age.' "8,000 B. - Civilization / Ur - "The Ur culture developed during the Neolithic Age and became global in expanse by 8,000 B. According to popular belief: 'Where the Sumerians came from is still disputed.
[....]" - "Traditional date when the continent of Atlantis sank beneath the waves. and is perhaps the oldest continuously occupied city on Earth." 9,000 B. - Tools / North America - "The Wenachee site, dated to 11,000 B. and located in the Inner Columbia River Basin, presents evidence of a new assemblage of stone tools in the Americas at their earliest known horizon." [Links: 1 - # 5]), has been identified genetically in southeastern Turkey, according to a report in the journal Science. article (Fossils show ancient use of chili peppers [about 6,100 years ago]), p. Typologically, the language of Sumer resembles Chinese, which suggests an eastern origin.
Researchers probing the ocean bottom have found 18-story-high towers of stone deep in the ocean near a section of volcanic fault ridges that extend for 6,200 miles along the Atlantic Ocean floor."9,000 B. - Jericho Settlement - "This city, located near a permanent spring a few miles west of the Jordan River was excavated by Kathleen Kenyon. Manfred Heun of the Agricultural University of Norway, along with Norwegian, German, and Italian colleagues, examined the DNA of 68 lines of cultivated einkorn (Triticum monococcum monococcum), 194 lines of wild einkorn (T. boeoticum) from nine geographical regions within the Fertile Crescent, and nine lines of a weedy einkorn (T. aegilopoides) found in the Balkans." - Fig Cultivation / Middle East - "[....] In the Middle East, figs were domesticated 11,400 years ago. In the New World, corn was being cultivated 9,000 years ago. Some scholars have proposed that the Sumerians came by ship, landing on the north shore of the Persian Gulf.' " 8,000 B. - Florida Indians - "Florida's Aucilla River is yielding evidence of the adaptability of Paleoindians to their changing environment at the end of the Pleistocene, 10,000 years ago.
There were indications of settlement after 9,000 B. For a decade, researchers from the Florida Museum of Natural History have been excavating the Page-Ladson site, and this past fall  they uncovered the ground surface of a Paleoindian habitation at a depth of 15 feet.
[NP] The invention of agriculture some 10,000 years ago disrupted these ancient soil-building processes.
When humans started draining and plowing up the natural topsoil for planting, they exposed the buried carbon to oxygen, creating carbon dioxide and releasing it into the air.
These cultural developments from the Archaic (ca.9,500- 4000 years ago) through the Formative Period (ca.
About 2,000 possibly man-made artifacts have been dredged and carbon-dated from 8,500 to 9,500 years old."*Trivia: "Stone Age rock shelters with paintings at the Bhimbetka rock shelters in Madhya Pradesh are the earliest known traces of human life in India.Animal husbandry made things worse, as domesticated animals began grazing grasslands down to the earth.