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Bering land bridge – Native Americans

By | 2017-06-20T02:14:40+00:00 June 20th, 2017|Environment, History, Native American|

Bering Strait - today there's ocean, but long ago there was a land bridge 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 lower, like the water in your [...]

Farming and famine – Climate change

By | 2017-06-20T02:11:33+00:00 June 20th, 2017|Environment|

Hunters, bison and aurochs Cave painting from Lascaux, ca. 15,000 BC Climate change encouraged the evolution of the first humans, who probably evolved in Africa as the climate got drier and grasslands replaced jungles. People came down from the trees and evolved to walk upright and run to catch Sahara (which was not [...]

Global warming in modern times

By | 2017-06-20T01:27:44+00:00 June 20th, 2017|Environment, Science|

Coal plant in China Human activities probably started to affect the world's climate as early as about 10,000 BC. That's when people started farming and cut down a whole lot of trees to create their fields. Trees take in carbon dioxide and convert it to oxygen. So without them, carbon dioxide levels rose, [...]

Climate change and the Philistines

By | 2017-06-20T01:15:45+00:00 June 20th, 2017|Africa, Environment, West Asia|

But even as people created the world's first cities and governments, the world continued to get warmer. This may have been caused partly by farming itself. Maybe the farmers cut down too many trees that had been taking carbon dioxide out of the atmosphere. By about 2000 BC, it was so warm that even in [...]

Climate change and world history

By | 2017-06-20T01:10:29+00:00 June 20th, 2017|Environment|

Wildebeest on savannah grasslands, Kenya (Africa) In the years just before human beings first evolved, the world was a wetter place than it is now, and a lot of Sahara Desert was not a desert at all, but nice meadows and little groups of trees, with small rivers running through it. People crossed [...]

When was the First Intermediate Period? – Ancient Egypt

By | 2017-06-14T11:50:23+00:00 June 14th, 2017|Africa, Egypt, Environment, History|

Nilometer on Elephantine Island (Nile Valley Tours) - This ancient Egyptian device measured how high the Nile floods were each year. The end of the Old Kingdom, around 2100 BC, seems to have been caused by a major climate change.  In Egypt, there was a terrible drought - the Nile failed to flood, [...]

Ancient Egyptian plants – papyrus and palm trees

By | 2017-06-13T12:32:17+00:00 June 13th, 2017|Africa, Egypt, Environment|

Date palms The plants that grew in ancient Egypt were very different from plants that grow in America or Britain. The lotus and the papyrus plants, for instance, were (and are) very common in Egypt. Papyrus is a kind of reed which grows in wetlands along the banks of the Nile River. Date [...]

Egyptian geography and environment – ancient Egypt’s climate and weather

By | 2017-12-29T23:20:27+00:00 June 13th, 2017|Africa, Egypt, Environment|

Egyptian geography: a map showing the Sahara desert and the Nile river The Sahara Desert Egypt has a very special environment, which has played a very big part in Egyptian history. Basically Egypt is really part of the Sahara Desert, which runs all across the top of Africa. But the Sahara is a [...]

Ancient Egyptian Animals – Egypt’s wild animals, domesticated animals, and pets

By | 2017-12-29T20:36:11+00:00 June 13th, 2017|Africa, Egypt, Environment|

Ancient Egyptian animals: Crocodiles from the New Kingdom Mostly, the same kinds of animals lived in ancient Egypt as in other parts of Africa. Wild animals included crocodiles, who lived in the Nile River water (and there are still lots of crocodiles in the Nile today, too!). There were lots of water birds [...]