2106

Unknown dates

 * The Ozone Purge was caused by a breakdown in weather control systems on Earth. It resulted in the extinction of many species, including sheep, cats and sparrows. (NA: Lucifer Rising)
 * Meanwhile, Yembe Lethbridge-Stewart died and was buried at the Achebe Gorge on Mars. (NA: Transit)
 * Warp drive was developed, enabling the first interstellar explorers to leave Earth and travel to other solar systems. (DW: Nightmare of Eden)