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Earth-Friendly Fabrics
Middle school science adventures
Getting the dirt on carbon
Amphibians
Tree Frogs
Poison Dart Frogs
Salamanders and Newts
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Poor Devils
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Professor Ant
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Double take
Primate Memory Showdown
Pipefish power from mom
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Flamingos
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Salt secrets
Batteries built by Viruses
Picture the Smell
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The hungry blob at the edge of the universe
Hitting the redo button on evolution
Secrets of an Ancient Computer
Dinosaurs and Fossils
Big Fish in Ancient Waters
Three strikes wiped out woolly mammoths
Mammals in the Shadow of Dinosaurs
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2014 GSAT Results for Jamaican Kids
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Earth
A Great Quake Coming?
Farms sprout in cities
Hot Summers, Wild Fires
Environment
Sounds and Silence
The Wolf and the Cow
What is groundwater
Finding the Past
Ancient Cave Behavior
Salt and Early Civilization
Ancient Art on the Rocks
Fish
Saltwater Fish
Flounder
Nurse Sharks
Food and Nutrition
Packing Fat
A Taste for Cheese
Eat Out, Eat Smart
GSAT English Rules
Order of Adjectives
Problems with Prepositions
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
GSAT stars reap scholarship glory
2014 GSAT Results for Jamaican Kids
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Deep-space dancers
Secrets of an Ancient Computer
It's a Math World for Animals
Human Body
Spitting Up Blobs to Get Around
Don't Eat That Sandwich!
Sea Kids See Clearly Underwater
Invertebrates
Daddy Long Legs
Wasps
Snails
Mammals
Bears
Giant Panda
Aardvarks
Parents
What Not to Say to Emerging Readers
How children learn
Expert report highlights the importance to parents of reading to children!
Physics
One ring around them all
Speedy stars
Extra Strings for New Sounds
Plants
Stalking Plants by Scent
The algae invasion
Pumping Up Poison Ivy
Reptiles
Boa Constrictors
Box Turtles
Reptiles
Space and Astronomy
Planets on the Edge
World of Three Suns
Asteroid Lost and Found
Technology and Engineering
Smart Windows
Supersuits for Superheroes
Weaving with Light
The Parts of Speech
Problems with Prepositions
Adjectives and Adverbs
What is a Noun
Transportation
Charged cars that would charge
Robots on a Rocky Road
Revving Up Green Machines
Weather
Either Martians or Mars has gas
In Antarctica watch the heat (and your step)
Weekend Weather Really Is Different
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Quick Quake Alerts

The ground shakes. Dishes fall off shelves. Houses collapse. Cars topple over bridges. Every year, earthquakes destroy homes and schools, and they kill many thousands of people around the world. Even scarier, it's impossible to know exactly when and where the next one will strike. A system of detectors in Los Angeles might be able to warn that an earthquake is coming, according to a new analysis. Even if the alarm comes only a few seconds before the quake, the system could save lives. Earthquakes cause a few different kinds of underground vibrations. One kind are called P waves, which travel quickly through Earth and rarely cause damage. The S waves that follow are more dangerous. They travel half as fast and shake the ground from side to side. Richard M. Allen of the University of Wisconsin-Madison and his colleagues analyzed ground motions from 53 fairly strong earthquakes that have struck Los Angeles since 1995. By looking at the first few seconds of a quake’s P wave, they found they could predict how big the oncoming S wave would be. Using detectors already in place throughout Los Angeles could give residents at least a few seconds warning that a quake is coming, Allen suggests. That wouldn’t be enough time to run away. But a siren or Internet message could save lives by giving people time to shut off power and stop trains. Kids in school could dive under their desks. The system wouldn’t make earthquakes any less scary, but at least you’d know what was coming!—E. Sohn

Quick Quake Alerts
Quick Quake Alerts








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