Agriculture
Growing Healthier Tomato Plants
Getting the dirt on carbon
Middle school science adventures
Amphibians
Frogs and Toads
Salamanders and Newts
Bullfrogs
Animals
A Grim Future for Some Killer Whales
Firefly Delight
Awake at Night
Behavior
Night of the living ants
Surprise Visitor
From dipping to fishing
Birds
Crows
Eagles
Vultures
Chemistry and Materials
Big Machine Reveals Small Worlds
Sweeeet! The Skinny on Sugar Substitutes
A Spider's Silky Strength
Computers
Music of the Future
Hitting the redo button on evolution
Seen on the Science Fair Scene
Dinosaurs and Fossils
Dinosaur Eggs-citement
Some Dinos Dined on Grass
Middle school science adventures
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
Earth
Distant Quake Changes Geyser Eruptions
Coral Islands Survive a Tsunami
Science loses out when ice caps melt
Environment
Easy Ways to Conserve Water
A Change in Time
Nanosponges Soak Up Pollutants
Finding the Past
A Human Migration Fueled by Dung?
Oldest Writing in the New World
Writing on eggshells
Fish
Parrotfish
Mahi-Mahi
Seahorses
Food and Nutrition
Chew for Health
Chocolate Rules
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
Access denied - Disabled boy aces GSAT
GSAT Practice Papers | GSAT Mathematics | Maths
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Math and our number sense: PassGSAT.com
Detecting True Art
Human Body
Workouts: Does Stretching Help?
Tapeworms and Drug Delivery
Prime Time for Broken Bones
Invertebrates
Clams
Camel Spiders
Worms
Mammals
Foxes
Hamsters
Humans
Parents
Choosing a Preschool: What to Consider
How children learn
Children and Media
Physics
IceCube Science
Thinner Air, Less Splatter
The Mirror Universe of Antimatter
Plants
Seeds of the Future
Springing forward
Bright Blooms That Glow
Reptiles
Boa Constrictors
Caimans
Black Mamba
Space and Astronomy
Unveiling Titan
An Icy Blob of Fluff
Big Galaxy Swallows Little Galaxy
Technology and Engineering
Smart Windows
Shape Shifting
A Micro-Dose of Your Own Medicine
The Parts of Speech
What is a Preposition?
What is a Verb?
Pronouns
Transportation
Are Propellers Fin-ished?
Where rivers run uphill
Reach for the Sky
Weather
A Dire Shortage of Water
Where rivers run uphill
Catching Some Rays
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Beyond Bar Codes

In the future, your refrigerator might alert you when the milk has gone sour. At the grocery store, cashiers won't need to scan bar codes because products will provide the data on their own. And packages and letters will carry electronic tags that send messages about where they are. To make such a world possible, scientists are working on a technology called radiofrequency identification (RFID). An RFID tag is an electronic device that can be glued to cereal boxes, milk cartons, envelopes, and other objects. The tags store information and use radio signals to communicate with computers or sensors. RFID tags already exist in the form of "smart cards" that store dollar amounts for riders of some public transportation systems. RFID chips have also been implanted in animals to identify them and allow owners to find them if the animals get lost. In these cases, the tags are made of silicon, the material from which most computer chips are made. However, silicon electronic tags are too expensive to be used as widely as printed bar codes are. Now, scientists from two companies in Europe have independently taken steps toward speeding up the spread of RFID technology. They have created tags completely out of plastic materials with the right kinds of electronic properties to transmit radio signals efficiently. The methods for making plastic tags are much cheaper than those for making silicon tags. The tags produced by scientists from Philips Research Laboratories in Eindhoven in the Netherlands are made from a type of plastic called pentacene and transmit radio waves at a frequency of 13.56 megahertz. The tags produced by PolyIC in Erlangen, Germany, use a different type of plastic. Neither type of tag is perfect yet. The plastic tags are still expensive and tricky to manufacture, and their radio signals don't travel very far. It may be a few years yet before plastic RFIDs make their way into nearly all of our everyday objects. But when they do, there will be an amazing amount of information zooming invisibly around us.E. Sohn

Beyond Bar Codes
Beyond Bar Codes








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