Watering the Air
Seeds of the Future
Flush-Free Fertilizer
Tree Frogs
Monkeys Count
Glimpses of a Legendary Woodpecker
Lucky Survival for Black Cats
Mind-reading Machine
Body clocks
Video Game Violence
Blue Jays
Chemistry and Materials
Sticky Silky Feet
Batteries built by Viruses
Sugary Survival Skill
Galaxies on the go
Fingerprint Evidence
A Classroom of the Mind
Dinosaurs and Fossils
The man who rocked biology to its core
Digging for Ancient DNA
A Rainforest Trapped in Amber
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Springing forward
Watering the Air
Slip Slidin' Away—Under the Sea
Giant snakes invading North America
Sounds and Silence
Antarctica warms, which threatens penguins
Finding the Past
Ancient Art on the Rocks
Digging Up Stone Age Art
Chicken of the Sea
Sting Ray
Food and Nutrition
Recipe for Health
Strong Bones for Life
The Essence of Celery
GSAT English Rules
Problems with Prepositions
Capitalization Rules
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Mastering The GSAT Exam
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Math and our number sense:
Play for Science
Math is a real brain bender
Human Body
Gut Microbes and Weight
Football Scrapes and Nasty Infections
Disease Detectives
Black Bear
Great Danes
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
Children and Media
One ring around them all
Hold on to your stars, ladies and gentlemen
Extra Strings for New Sounds
Bright Blooms That Glow
Tracking the Sun Improves Plant Pollen
Stalking Plants by Scent
Box Turtles
Garter Snakes
Space and Astronomy
Asteroid Moons
Cool as a Jupiter
A Great Ball of Fire
Technology and Engineering
Are Propellers Fin-ished?
Dancing with Robots
Crime Lab
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
Adjectives and Adverbs
Robots on the Road, Again
Troubles with Hubble
Robots on a Rocky Road
Warmest Year on Record
The Best Defense Is a Good Snow Fence
A Change in Climate
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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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