Eric Walker added Toba catastrophe theory - Wikipedia to Modern humans (paleoanthropology)

Eric Walker added Toba catastrophe theory - Wikipedia to Youngest Toba eruption and Archaic humans

Eric Walker added Toba catastrophe theory - Wikipedia to Youngest Toba eruption, and added Youngest Toba eruption to Volcanic eruptions and Sumatra

Eric Walker added Youngest Toba eruption to Sumatra, and added Sumatra to Indonesia

Eric Walker added Youngest Toba eruption and 2022-01 Hunga volcanic eruption and a number of links to Volcanic eruptions, and added Volcanic eruptions to Volcanoes and Natural events and disasters