Microbes at the Gas Pump
Where Have All the Bees Gone?
Silk’s superpowers
Salamanders and Newts
Poison Dart Frogs
Cannibal Crickets
Roach Love Songs
Mouse Songs
Making light of sleep
Talking with Hands
Lightening Your Mood
Flightless Birds
Chemistry and Materials
Flytrap Machine
Supergoo to the rescue
Atom Hauler
A Light Delay
Look into My Eyes
Play for Science
Dinosaurs and Fossils
Fossil Forests
Dinosaurs Grow Up
Fingerprinting Fossils
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Watering the Air
A Global Warming Flap
Groundwater and the Water Cycle
Indoor ozone stopper
Will Climate Change Depose Monarchs?
The Birds are Falling
Finding the Past
Preserving Ancient Warrior Paint
Ancient Art on the Rocks
Little People Cause Big Surprise
Pygmy Sharks
Basking Sharks
Food and Nutrition
A Pepper Part that Burns Fat
The Essence of Celery
Healing Honey
GSAT English Rules
Capitalization Rules
Problems with Prepositions
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exam Preparation
GSAT stars reap scholarship glory
GSAT Mathematics
Math and our number sense:
It's a Math World for Animals
Detecting True Art
Human Body
A Sour Taste in Your Mouth
A Better Flu Shot
Heavy Sleep
Kodiak Bear
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
How children learn
One ring around them all
Echoes of a Stretched Egg
Black Hole Journey
Pumping Up Poison Ivy
Seeds of the Future
Getting the dirt on carbon
Space and Astronomy
Evidence of a Wet Mars
Unveiling Titan
Tossing Out a Black Hole Life Preserver
Technology and Engineering
Young Scientists Take Flight
Roll-Up Computer Monitors to Go
A Satellite of Your Own
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
Where rivers run uphill
Tinkering With the Basic Bike
Middle school science adventures
Polar Ice Feels the Heat
A Change in Climate
In Antarctica watch the heat (and your step)
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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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