Agriculture
Springing forward
Microbes at the Gas Pump
Watering the Air
Amphibians
Salamanders and Newts
Salamanders
Bullfrogs
Animals
A Wild Ferret Rise
Crocodile Hearts
How to Silence a Cricket
Behavior
Between a rock and a wet place
From dipping to fishing
The nerve of one animal
Birds
Hummingbirds
Doves
Rheas
Chemistry and Materials
Popping to Perfection
Heaviest named element is official
Salt secrets
Computers
Fingerprint Evidence
Look into My Eyes
A Light Delay
Dinosaurs and Fossils
An Ancient Spider's Web
From Mammoth to Modern Elephant
Early Birds Ready to Rumble
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Earth's Lowly Rumble
Slower Growth, Greater Warmth
Life under Ice
Environment
A Change in Leaf Color
Catching Some Rays
Spotty Survival
Finding the Past
The Taming of the Cat
Early Maya Writing
Of Lice and Old Clothes
Fish
Codfish
Great White Shark
Tiger Sharks
Food and Nutrition
How Super Are Superfruits?
Sponges' secret weapon
Packing Fat
GSAT English Rules
Capitalization Rules
Adjectives and Adverbs
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
Ministry of Education Announces 82 GSAT Scholarships for 2010
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
2014 GSAT Results for Jamaican Kids
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Deep-space dancers
Detecting True Art
Play for Science
Human Body
Music in the Brain
Surviving Olympic Heat
Sea Kids See Clearly Underwater
Invertebrates
Spiders
Millipedes
Horseshoe Crabs
Mammals
Whales
Gerbils
Manatees
Parents
Choosing a Preschool: What to Consider
What Not to Say to Emerging Readers
How children learn
Physics
Extra Strings for New Sounds
Thinner Air, Less Splatter
Dreams of Floating in Space
Plants
The algae invasion
Nature's Alphabet
Tracking the Sun Improves Plant Pollen
Reptiles
Geckos
Caimans
Snapping Turtles
Space and Astronomy
A Planet's Slim-Fast Plan
Super Star Cluster in the Neighborhood
A Star's Belt of Dust and Rocks
Technology and Engineering
A Clean Getaway
Slip Sliming Away
Toy Challenge
The Parts of Speech
Countable and Uncountable Nouns
Pronouns
What is a Noun
Transportation
Seen on the Science Fair Scene
Tinkering With the Basic Bike
Reach for the Sky
Weather
A Change in Climate
Where rivers run uphill
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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