By: Elizabeth M Young
The common term is "gemstone". Gemstones can be called precious, semi-precious or gems and can be composed of minerals, crystals or organic substances. Diamonds are crystalline, but can have minerals mixed in. Malachite is primarily a mineral that is a carbonite of copper. Amber is...
By: Blaise Pascal
Potable (drinkable) water and water in general is one of the most precious substances on the planet because every living thing needs it to survive. Not every area of the world has access to water or enough water to support the needs of a growing...
By: Gregory Downs
An aqueduct is a man-made water conduit used to channel water from the water's source to the water’s destination. The design of the aqueduct is based solely on the principle of gravity flow. Have you ever wondered how aqueducts work? An engineer who specializes...
How Lake Superior was formed
By: Stacie Bradshaw
"Those who have never seen Superior get an inadequate idea by hearing it spoken of as a lake. Superior is a sea. It breeds storms and rain and fog like a sea. It is cold, masterful, and dreaded." Rev. George Grant, 1872 Despite this...
By: B. J. Deming
Our planet can be very violent at times. Its spasms are wonderful to watch from a safe distance and may leave behind areas of great scenic beauty, but they seldom make things easier for us. The Great Lakes of North America are an exception because...
By: Blaise Pascal
Epsom salt is a mineral that is used by many people around the world. It is not only inexpensive, but there are a variety of different applications for Epsom salt and it offers many benefits for those that frequently use it. Despite so many people...
By: Blaise Pascal
Limestone is a sedimentary rock made from calcite as a result of organic means or chemical means over a longer period of time. It’s a very useful material that is used for many applications. Limestone can be used in flooring, as different building materials...
By: Blaise Pascal
Limestone is a common type of sedimentary rock that is made from calcite and is used for a variety of different applications. It can be used in building applications, flooring, cement production, concrete filler, steel production, counter tops, blackboard chalk, and a variety of others...
By: Mary Ann Mellott
A volcano sits quietly, showing no above ground activity for hundreds, perhaps thousands of years, and suddenly-Kaboom! Ash shoots skyward, and soon a river of molten lava is pouring down the mountain. What caused the explosion? Most volcanoes are found on fault lines where the...
How to get a bearing with a compass
By: Kevin W Byrom
In the hands of a trained individual, a compass becomes an invaluable tool to the one who wields it. Whether it's used to plot a path from point A to point B, determine what quadrant you're located in, or locate your approximate position on a...

 

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