humans

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6 09, 2017

Human body – history of medicine

By |2019-09-04T04:51:54-07:00September 6th, 2017|Science|0 Comments

Ebers Papyrus, one of the oldest known medical texts about the human body. From Egypt, about 1550 BC How does the human body work? Doctors have been trying to figure out how the human body works since the Stone Age, and there are still many things we don't know about the human body even [...]

25 06, 2017

Tertiary period – mammals and mountains

By |2019-09-20T12:42:36-07:00June 25th, 2017|Geology|2 Comments

Tertiary period: Large animals evolved like moose Dinosaurs become extinct The Tertiary period begins with the catastrophe that killed off the dinosaurs at the end of the Cretaceous Period, about 65 million years ago. And the Tertiary lasts down to 1.8 million years ago. Mammals become more common With nearly all of the dinosaurs [...]

24 06, 2017

Quaternary period – modern times

By |2018-11-09T07:50:38-07:00June 24th, 2017|Biology, Geology|0 Comments

The Quaternary Period includes today - big cities and all When was the Quaternary Period? The Quaternary period began about 1.8 million years ago (1,800,000 years ago), coming after the Tertiary. The Quaternary is still going on today - we live in the Quaternary period. So far, it's a much shorter period than [...]

20 06, 2017

Bering land bridge – Native Americans

By |2018-11-09T07:05:43-07:00June 20th, 2017|Environment, History, Native American|0 Comments

Bering Strait - today there's ocean, but long ago there it was the Bering land bridge Ocean levels were lower During an Ice Age, when the world is colder, more of the world's water freezes into ice. So less water is in the oceans than before. This makes the level of the oceans [...]

20 06, 2017

Farming and famine – Climate change

By |2019-04-09T19:16:10-07:00June 20th, 2017|Environment|0 Comments

Climate change: Hunters, bison and aurochs Cave painting from Lascaux, ca. 15,000 BC Climate change and human evolution Climate change encouraged the evolution of the first humans, who probably evolved in Africa as the climate got drier and grasslands replaced jungles. Human evolution Early primates African environment All our Africa articles People came [...]

26 05, 2017

Early Humans – Evolution Science

By |2018-09-02T13:44:52-07:00May 26th, 2017|Africa, Biology|1 Comment

Early humans: Skeleton of early human Lucy, from about 3.2 million years ago When did the first humans evolve? About six million years ago, the earliest people evolved from earlier primates in East Africa. Read more about the primates Read more about the Tertiary Period Why did people evolve from earlier primates? People [...]

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 [...]