Collection of interesting events possibly leading to population changement

Under construction:

• 4,200 YBP abrupt drought, precipitation reductions of up to 30% in the Middle East, Drought and the Akkadian Empire;
  
• 5900-5500 YBP serious global warming events, End of the African Humid Period;
• 8,200 YBP over two decades temperature cooled (about 3.3°C in Greenland, 8.2 ka event), Post-glacial cooling 8,200 Years Ago;
• 11,500 YBP, Earth’s climate began to look and behave like today;
• 12,800-11,500 YBP  Northern Hemisphere suddenly returned to near-glacial conditions, Younger Dryas;
• 14,000 YBP: shift from a cold glacial world to a warmer interglacial state;
• 14,100 YBP Older Dryas;
• 18,000 -15,000 YBP Oldest Dryas;
• 20,000 YBP Last Glacial Maximum;