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What was the First Type of Shoe? What was the First Type of Shoe?

The first shoes were probably an early prototype for sandals, with soles made of hide, brak wood or wooven grass which were bound to the fee...

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Does an Ostrich Really Bury Its Head in the Sand? Does an Ostrich Really Bury Its Head in the Sand?

The ostrich is rather a strange bird, and there are many interesting and peculiar things about it, but it does not hide its head in the sand...

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Where was the Great City of the Ancient World? Where was the Great City of the Ancient World?

Babylon was the great city of the ancient world. It was the capital kingdom of Babylonian and of Babylonian empires. Babylon stood on the ba...

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How Long  is a Martian Day? How Long is a Martian Day?

The Martian day, or the time it takes Mars to rotate once on it's axis, is about a half an hour longer than an Earth day. Its year, or t...

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What is a Geostationary Satellite? What is a Geostationary Satellite?

There are two types of weather satellites for long and short-term observations, which together give a complete picture of Earth's weathe...

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What's Inside a Tooth? What's Inside a Tooth?

A tooth consists of four kinds of tissues. They are (1) pulp (2) dentine (3) enamel and (4) cementum. Pulp is the innermost layer of a too...

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