By: D. J. Poe
When I think of backyard geology, the first thing that comes to mind is gold. Of course, it's not in everyone's backyard, but it can be found. There's an old saying, "gold is where you find it"; in other words, look for gold where it's...
By: John Comeau
For years, my neighbors would sing almost every night. Sometimes it would be just one of them, howling alone and lonely in the desert; most often it would be a party, yipping up a high-pitched storm when one of them brought home the bacon. When...
By: David Cowley
How Are Diamonds Made? Millions of years ago the ancient oceans had microorganisms that lived and died in the oceans. When the microorganisms died there bodies fell to the ocean floor. After the bodies decomposed, what was left was almost pure carbon. The crust of...
By: Lesley Banks
Life Goes On?Imagine a world with thick grey clouds that block out the sunlight. Think of freezing temperatures that persist for months, and imagine being hungry constantly. Could you survive in a world like that?Three thousand generations ago those circumstances faced our ancestors...
By: David Cowley
Facts About Black Diamonds. Black diamonds are also called carbonados diamonds. The Portuguese in Brazil coined the term carbonados in the mid-18th century. It derived from its visual similarity to porous charcoal. Black diamonds are found only in Brazil and the Central African Republic.Approximately...
By: Rich Tull
To understand the age of the earth, you must first have an understanding of three scientific principles: plate tectonics, planetary body formation sequences and the concept of radiometric dating.Plate TectonicsOur understanding of plate tectonics is relatively recent but comparatively thorough despite the youth of...
By: Carol Boshears
The World of GemsMy husband and I are appraisers. We have been into antiques and collectables for some time now. I know a lot about pottery and several other items, but neither of us knows anything about gems. We thought that as a part of...
By: David Cowley
Facts About Champagne Diamonds. The majority of the Champagne color diamonds are found in the Ragged Ranges in the Kimberley region of Australia. In this remote corner of north west Australia is the largest diamond mine in the world the called Argyle Diamond Mine. Diamonds...
By: Marie Nunn
DENSITY-DEPENDENT MORTALITY OF WINTERING REDSHANKSAn investigation in South-East Scotland, spanning eleven years, studied predation by Eurasian sparrow hawks on density-dependent mortality of wintering redshanks. Research was undertaken by Philip Whitfield of Scottish National Heritage, along a 5km rocky shore at Scoughall, on the pouter Firth...
By: David Cowley
The Facts About Blue Diamonds. Diamonds are composed of carbon atoms that have been subject to extreme pressure and heat. If the diamond contains no impurities then the color will be crystal clear. Nature rarely creates anything that does not have any impurities in it...

 

1 59 60 61 62 63 533