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Microbes at the Gas Pump
Chicken Eggs as Drug Factories
Salamanders and Newts
Tree Frogs
Cacophony Acoustics
A Spider's Taste for Blood
Mouse Songs
Sugar-pill medicine
How Much Babies Know
Fish needs see-through head
Chemistry and Materials
Revving Up Green Machines
The Buzz about Caffeine
Undercover Detectives
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Dinosaur Dig
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Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Weird, new ant
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Recipe for a Hurricane
Watching for Wildfires in Yellowstone
Flu river
Power of the Wind
Finding the Past
Words of the Distant Past
Chicken of the Sea
Your inner Neandertal
Electric Catfish
Food and Nutrition
Yummy bugs
Strong Bones for Life
Moving Good Fats from Fish to Mice
GSAT English Rules
Order of Adjectives
Whoever vs. Whomever
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GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
The Annual GSAT Scholarships
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42,000 students will sit for the GSAT Exam in two weeks
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Human Body
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Gut Microbes and Weight
Miniature Schnauzers
Grizzly Bear
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Project Music
The Particle Zoo
Extra Strings for New Sounds
Making the most of a meal
Cactus Goo for Clean Water
City Trees Beat Country Trees
Black Mamba
Snapping Turtles
Space and Astronomy
Roving the Red Planet
Unveiling Titan
Burst Busters
Technology and Engineering
Roll-Up Computer Monitors to Go
A Light Delay
Drawing Energy out of Wastewater
The Parts of Speech
Adjectives and Adverbs
Countable and Uncountable Nouns
Charged cars that would charge
Robots on the Road, Again
Robots on a Rocky Road
Polar Ice Feels the Heat
Catching Some Rays
Watering the Air
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Unscrambling a Gem of a Mystery

Hidden inside every shiny green emerald is a geographical mystery. Once an emerald is plucked from a mine in its home country and turned into a piece of jewelry, it can be nearly impossible to figure out where the gem came from in the first place. Now, researchers from France think they have found a solution. It's all about the water. Molecules of water are trapped inside tiny channels in every emerald. Water has the chemical formula H2O. This means that each molecule of water is made up of three atoms: two atoms of hydrogen (H) and one atom of oxygen (O). There are several types of hydrogen atoms. One unusual type, called deuterium, weighs twice as much as the type of hydrogen most commonly found. Some water molecules contain the heavier form of hydrogen instead of the lighter one. It turns out that when you shine a special kind of laser light on an emerald, the heavy hydrogen reacts differently in emeralds from different parts of the world. This signal reveals where a certain emerald came from. So far, the researchers have used their method to trace emeralds to 10 specific mines in seven countries. They can also tell the difference between natural emeralds and human-made ones. Emeralds from some countries cost more than others, so the new technique might help jewelry sellers determine how much their gems are truly worth. It could also help historians trace ancient trade routes. So, every gem carries its own story, and researchers are starting to translate it into a language that we can all understand.E. Sohn

Unscrambling a Gem of a Mystery
Unscrambling a Gem of a Mystery

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