By: Cameron Scott
If you live between the Tropic of Cancer and the Tropic of Capricorn, the amount of daylight you get each day doesn't vary much. If you live near the equator, it's pretty much thirteen-hour days and eleven-hour nights year round, with sunrise around 7:30 am...
Changes necessary to make in order to save the planet (from the family to the factory)
By: Christyl Rivers
It is arrogant to believe humans can “save” the planet. However, there are many, many things that human beings can do, that will help nature preserve the planet. Nature has many healing, creative and restorative ways; humans just need to be open to them...
The earth's rotation has slowed down: Why and what next?
By: Jon Dainty Sr.
Many people are unaware of the effect that the Moon’s gravity has on the apparent length of the day on Earth. Rest assured that there is a very large effect if one considers the masses being shifted by this patient, long-term force. Likewise, the...
By: Frederick4491
Prime numbers have fascinated scholars of mathematics since their invention. Well, maybe not fascinated, but at least they have generated interest and still do. What are prime numbers? Basically, a number is prime if it is a natural number greater than 1 which has no...
By: Robin Lamb
Eratosthenes of Cyrene was an exceptional scholar who made lasting contributions in mathematics, geography, history and astronomy. He was also a poet, a theatre critic, chief librarian at Alexandria and, most notably, the first person to accurately estimate the size of the Earth. And yet...
By: Michael Totten
Eratosthenes of Cyrene was a natural philosopher and poet who is best known for his development of modern cartographical principles. He is best known for correctly calculating the circumference of the Earth and the tilt of its axis, and for making the first world map...
Locating Rhodesia
By: Tim Harry
People looking at a map of the world today will have a great deal of trouble in locating Rhodesia, as it is a country that does not exist. People who recognise the name may simply equate it with modern day Zimbabwe in Africa; although saying...
By: Dr. Bryan Katz
Calculating the times of sunrise and sunset may seem like a daunting challenge to someone unaccustomed to sky watching, but with some basic knowledge and a little practice, it is a relatively easy skill to learn. This article will help you get started. Let's start...
The scientific reasons behind Earth's seasons
By: Jose Juan Gutierrez
The Earth's seasons are the result of the Earth's rotation around the Sun and the tilt of its axis relative to the ecliptic. The seasons mark the time of year when the Earth experiences weather and ecological changes. The seasons in different regions in the...
By: Patrick Stephen Baker
“Archaeology Theories, Methods and Practice” (5th edition) by Colin Renfrew and Paul G. Bahn is the basic and indispensable text book for undergraduate archaeology students. In this new 5th Edition, many new theoretical advances, such as agency and materiality theories, have been added, while...

 

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