Got Milk? How?
Watering the Air
Getting the dirt on carbon
Poison Dart Frogs
Walks on the Wild Side
Elephant Mimics
Cool Penguins
Chimpanzee Hunting Tools
Slumber by the numbers
Night of the living ants
Chemistry and Materials
The solar system's biggest junkyard
Bang, Sparkle, Burst, and Boom
The memory of a material
Electronic Paper Turns a Page
Games with a Purpose
Lighting goes digital
Dinosaurs and Fossils
Digging Dinos
Big Fish in Ancient Waters
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
Springing forward
Easy Ways to Conserve Water
A Dire Shortage of Water
Eating Up Foul Sewage Smells
The Down Side of Keeping Clean
Spotty Survival
Finding the Past
Traces of Ancient Campfires
Little People Cause Big Surprise
A Long Haul
Electric Ray
Food and Nutrition
In Search of the Perfect French Fry
Making good, brown fat
A Taste for Cheese
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
10 Common Mistakes When Preparing for the GSAT Math Test
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT Exam Preparation
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Losing with Heads or Tails
Setting a Prime Number Record
Human Body
A Sour Taste in Your Mouth
Dreaming makes perfect
Cell Phones and Possible Health Hazards
Black Widow spiders
Weasels and Kin
Hoofed Mammals
How children learn
Expert report highlights the importance to parents of reading to children!
Children and Media
Strange Universe: The Stuff of Darkness
One ring around them all
Invisibility Ring
City Trees Beat Country Trees
Tracking the Sun Improves Plant Pollen
Fast-flying fungal spores
Space and Astronomy
A Smashing Display
Super Star Cluster in the Neighborhood
Pluto's New Moons
Technology and Engineering
Crime Lab
Model Plane Flies the Atlantic
Machine Copy
The Parts of Speech
Problems with Prepositions
What is a Preposition?
What is a Verb?
Robots on the Road, Again
Robots on a Rocky Road
Ready, unplug, drive
Weekend Weather Really Is Different
Polar Ice Feels the Heat
Earth's Poles in Peril
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Echoes of a Stretched Egg

You are what you eat, a familiar saying goes. When it comes to eggs, though, you don't even have to eat them to resemble one. Sound waves bounce off people as if each person were an enormous, stretched-out chicken egg, scientists reported recently at a meeting of the Acoustical Society of America. The discovery could help designers build better concert halls or other buildings where sound is important. The shape of an object determines which way sound bounces off of it. Two years ago, a pair of researchers from France discovered that they could use sound to determine the shape of an object as it moves around in a tank of water. This finding suggested the possibility of using sound as a way to identify and count different species of fish in the ocean automatically. Fish can be hard to handle, however, so the researchers chose to work first with people. In one experiment, people walked around inside a hard-walled room, while the scientists used microphones to record echoes of sounds produced by speakers. Participants ranged in age from 3 to 55 years. Analyses of the results showed that each person reflected sound in the same way as would an egg of his or her size. From the viewpoint of sound waves, most of us would have shapes that are somewhat taller and thinner than an average egg. Now, would you like your sounds scrambled, boiled, or fried?E. Sohn

Echoes of a Stretched Egg
Echoes of a Stretched Egg

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