Treating peanut allergy bit by bit
Cleaning Up Fish Farms
Flush-Free Fertilizer
Frogs and Toads
Stunts for High-Diving Ants
Crocodile Hearts
Polly Shouldn't Get a Cracker
Monkeys in the Mirror
Swine flu goes global
Reading Body Language
Chemistry and Materials
Picture the Smell
Undercover Detectives
Heaviest named element is official
Secrets of an Ancient Computer
New twists for phantom limbs
Middle school science adventures
Dinosaurs and Fossils
Hunting by Sucking, Long Ago
Some Dinos Dined on Grass
Message in a dinosaur's teeth
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
Earth's Poles in Peril
Polar Ice Feels the Heat
A Great Quake Coming?
Whale Watch
Groundwater and the Water Cycle
Flu river
Finding the Past
A Big Discovery about Little People
Ancient Art on the Rocks
Watching deep-space fireworks
A Jellyfish's Blurry View
Food and Nutrition
Sponges' secret weapon
Eat Out, Eat Smart
Healing Honey
GSAT English Rules
Order of Adjectives
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
GSAT Scholarship
GSAT Exam Preparation
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT stars reap scholarship glory
GSAT Scholarship
GSAT Mathematics
42,000 students will sit for the GSAT Exam in two weeks
Secrets of an Ancient Computer
10 Common Mistakes When Preparing for the GSAT Math Test
Human Body
Gut Microbes and Weight
Spit Power
Spitting Up Blobs to Get Around
Black Widow spiders
Guinea Pigs
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
Strange Universe: The Stuff of Darkness
The Particle Zoo
Thinner Air, Less Splatter
Assembling the Tree of Life
City Trees Beat Country Trees
Hungry bug seeks hot meal
Space and Astronomy
Unveiling Titan
Return to Space
Asteroid Lost and Found
Technology and Engineering
Sugar Power for Cell Phones
Smart Windows
Space Umbrellas to Shield Earth
The Parts of Speech
What is a Preposition?
Problems with Prepositions
Flying the Hyper Skies
Charged cars that would charge
Where rivers run uphill
Science loses out when ice caps melt
Polar Ice Feels the Heat
Watering the Air
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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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