South American environment
The Andes mountains run down the Pacific side of South America South America is a long, narrow continent running from the equator down nearly to the South Pole. So the north [...]
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09, 2017
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08, 2017
Moses and Egypt – Bible stories
The Pharaoh's daughter picks Moses up out of his basket (synagogue at Dura Europos, Syria, 200s AD) The Book of Exodus According to the Book of Exodus in the Bible [...]
14
08, 2017
Emily Dickinson – American poetry
Emily Dickinson I'm Nobody (1891) I'm nobody! Who are you? Are you nobody, too? Then there's a pair of us--don't tell! They'd banish us, you know. How dreary to be [...]
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07, 2017
Who was Aristophanes? Greek playwright
Aristophanes: Greek krater bowl for mixing water and wine, with a scene from a comedy on it (Probably the Tarpoley Painter, about 400 BC) Political comedy Aristophanes (arr-iss-TA-fa-knees) lived in [...]
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06, 2017
Carboniferous Period – Geology
Dragonfly When was the Carboniferous period? With the end of the Devonian period about 359 million years ago, the Carboniferous period got started. More about the Devonian Quick summary of [...]
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05, 2017
Eggs – Evolution and Biology
Fish eggs: Egg evolution starts with soft eggs like these When did the first eggs evolve? The earliest living creatures made babies by dividing themselves in half, so that one [...]
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05, 2017
Evolution of bones – Skeletons and Biology
A fish skeleton Before there were bones One-celled animals don't have any support system that holds them in a certain shape. Plants do have a support system, but it's the [...]
27
05, 2017
How do animals breathe? Respiration, Evolution, Biology
Fish gills The first cells, which evolved about 3.8 billion years ago, needed carbon dioxide to live and not oxygen. They needed the carbon dioxide to help them break down [...]
27
05, 2017
Reproductive System – Evolution and Biology
Reproduction: Hydra budding new hydras RNA and DNA molecules The first form of reproduction began about four billion years ago, when first RNA molecules and then DNA molecules began to make [...]
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05, 2017
What are intestines? Evolution and Digestion
Whale intestines (from Medicine Chest) When did intestines evolve? The first animals to have anything like an intestine evolved around 548 million years ago. These were roundworms, just a few [...]
