Friday, February 7, 2025

The Largest Volcanic Eruption in Human History

 From Smithsonian:

Our story begins on a very bad day about 74,000 years ago. The planet was starting to move out of one of its more recent ice ages, although in the tropics there was little change in climate between the Ice Age glacial episodes and the warmer interglacial episodes. A wide range of late Ice Age mammals inhabited the world, including woolly rhinoceroses and mammoths up in the cold regions of Eurasia, along with huge bison, giant deer, wild horses, and a variety of smaller mammals. Giant lions, sabertoothed cats, and huge bears fed on these large prey animals.

People lived in many parts of the Old World by then but had not yet reached Australia or the Americas. The bulk of the human population were archaic members of our species, Homo sapiens, which first appeared in southern Africa about 100,000 to 300,000 years ago. By 74,000 years ago, these people had spread out of Africa and may have occupied much of Asia, as well as parts of southeastern Europe. However, Europe was still dominated by another human species, the Neanderthals, who had adapted to life on the edge of the northern ice sheet. In contrast to archaic Homo sapiens, Neanderthals had a shorter, stockier, more muscular build and shorter limbs, a body type suitable for attacking large prey and adapted for reducing heat loss in the cold climate. In the far reaches of Asia, ancient humans had spread to many of the islands of modern-day Indonesia and Malaysia. On one now known as Flores, east of Java and Bali, they evolved into a dwarfed species, Homo floresiensis. Now nicknamed “hobbits,” these people stood only about 3 feet and 7 inches tall, shorter than any modern adult Pygmies (given their small brain size, some anthropologists question whether they are even in our genus, Homo). Flores is part of the island chain (including Sumatra, Java, and many smaller islands of the Malay Archipelago) that makes up of most of modern Indonesia. These islands are built completely of volcanoes, both active ones and ancient, dormant ones. Their climate is tropical and their jungle is dense. So much vegetation grows on the rich volcanic soil, in fact, that it’s often hard to recognize signs of volcanoes there. (Read more.)

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