Protecting Cows—and People—from a Deadly Disease
Earth-Friendly Fabrics
Growing Healthier Tomato Plants
Tree Frogs
A Grim Future for Some Killer Whales
Cacophony Acoustics
How Much Babies Know
The (kids') eyes have it
Hitting the redo button on evolution
Chemistry and Materials
Atom Hauler
The memory of a material
Atomic Drive
A Light Delay
Electronic Paper Turns a Page
A New Look at Saturn's rings
Dinosaurs and Fossils
Meet your mysterious relative
Dino Takeout for Mammals
Dino Babies
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Surf Watch
Springing forward
Digging into a Tsunami Disaster
Bald Eagles Forever
A Stormy History
Giant snakes invading North America
Finding the Past
A Plankhouse Past
A Long Haul
Stonehenge Settlement
Food and Nutrition
A Taste for Cheese
Yummy bugs
How Super Are Superfruits?
GSAT English Rules
Who vs. That vs. Which
Who vs. Whom
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
Tarrant High overcoming the odds
Ministry of Education Announces 82 GSAT Scholarships for 2010
GSAT Exams Jamaica Scholarships
GSAT Scholarship
2014 GSAT Results for Jamaican Kids
Access denied - Disabled boy aces GSAT
GSAT Mathematics
42,000 students will sit for the GSAT Exam in two weeks
A Sweet Advance in Candy Packing
It's a Math World for Animals
Human Body
Heavy Sleep
Taking the sting out of scorpion venom
Electricity's Spark of Life
Grizzly Bear
Miscellaneous Mammals
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
The Particle Zoo
Dreams of Floating in Space
The Pressure of Scuba Diving
Hungry bug seeks hot meal
Surprise Visitor
White fuzzy mold not as friendly as it looks
Box Turtles
Garter Snakes
Space and Astronomy
Gravity Tractor as Asteroid Mover
Baby Star
Catching a Comet's Tail
Technology and Engineering
Are Propellers Fin-ished?
Supersuits for Superheroes
Riding Sunlight
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
Problems with Prepositions
How to Fly Like a Bat
Robots on the Road, Again
Morphing a Wing to Save Fuel
Weekend Weather Really Is Different
Watering the Air
Where rivers run uphill
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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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