Middle school science adventures
Getting the dirt on carbon
Microbes at the Gas Pump
Frogs and Toads
How to Fly Like a Bat
A Wild Ferret Rise
Saving Africa's Wild Dogs
Flower family knows its roots
Storing Memories before Bedtime
Chimpanzee Hunting Tools
Chemistry and Materials
Picture the Smell
Revving Up Green Machines
The chemistry of sleeplessness
Toxic Dirt + Avian Flu = Science Fair Success
Programming with Alice
Lighting goes digital
Dinosaurs and Fossils
The bug that may have killed a dinosaur
Dinosaurs Grow Up
Dino Flesh from Fossil Bone
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
Snowflakes and Avalanches
Coral Islands Survive a Tsunami
Detecting an Eerie Sea Glow
Improving the Camel
Blooming Jellies
Watching for Wildfires in Yellowstone
Finding the Past
Untangling Human Origins
The Taming of the Cat
Preserving Ancient Warrior Paint
Megamouth Sharks
Flashlight Fishes
Whale Sharks
Food and Nutrition
Recipe for Health
Allergies: From Bee Stings to Peanuts
Building a Food Pyramid
GSAT English Rules
Who vs. That vs. Which
Subject and Verb Agreement
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
2014 GSAT Results for Jamaican Kids
GSAT Scholarship
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Exam Preparation
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Math Naturals
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
A Better Flu Shot
Cell Phone Tattlers
Teen Brains, Under Construction
Praying Mantis
Siamese Cats
Raise a Lifelong Reader by Reading Aloud
Choosing a Preschool: What to Consider
Children and Media
The Mirror Universe of Antimatter
Dreams of Floating in Space
Invisibility Ring
Farms sprout in cities
Hungry bug seeks hot meal
White fuzzy mold not as friendly as it looks
Box Turtles
Black Mamba
Space and Astronomy
Killers from Outer Space
A Galaxy Far, Far, Far Away
Tossing Out a Black Hole Life Preserver
Technology and Engineering
Model Plane Flies the Atlantic
Morphing a Wing to Save Fuel
Slip Sliming Away
The Parts of Speech
Adjectives and Adverbs
What is a Noun
Countable and Uncountable Nouns
Revving Up Green Machines
Charged cars that would charge
Morphing a Wing to Save Fuel
Arctic Melt
The Best Defense Is a Good Snow Fence
Recipe for a Hurricane
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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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