Niger

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25 06, 2017

What is basalt? Igneous rock

By |2019-02-10T14:53:51-07:00June 25th, 2017|Geology|0 Comments

Where does basalt come from? Basalt is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes, so it's one kind of igneous rock. Igneous rocks Volcanoes All our geology articles What is basalt made of? Early Stone Age basalt choppers from Olduvai Gorge (Tanzania) When the lava cools [...]

17 05, 2017

Early African History

By |2019-09-14T06:44:31-07:00May 17th, 2017|Africa|6 Comments

Early African history: Pyramids at Giza, Egypt The first modern humans About three and a half million years ago, primates like chimpanzees in Africa started to come down out of the trees and evolve into modern people, walking upright and maybe swimming. More about chimpanzees Early primates/humans When did people learn to swim? All our [...]