Agriculture
Where Have All the Bees Gone?
Hungry bug seeks hot meal
Protecting Cows—and People—from a Deadly Disease
Amphibians
Poison Dart Frogs
Frogs and Toads
Salamanders
Animals
Vampire Bats on the Run
Staying Away from Sick Lobsters
Vent Worms Like It Hot
Behavior
Why Cats Nap and Whales Snooze
Chimpanzee Hunting Tools
Wake Up, Sleepy Gene
Birds
Parakeets
Chicken
Albatrosses
Chemistry and Materials
A Diamond Polish for Ancient Tools
The solar system's biggest junkyard
Bandages that could bite back
Computers
Two monkeys see a more colorful world
A New Look at Saturn's rings
Earth from the inside out
Dinosaurs and Fossils
Dinosaur Eggs-citement
Dinosaur Dig
A Rainforest Trapped in Amber
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
A Global Warming Flap
Arctic Algae Show Climate Change
Rocking the House
Environment
Eating Up Foul Sewage Smells
Easy Ways to Conserve Water
Pumping Up Poison Ivy
Finding the Past
Stone Age Sole Survivors
Ancient Art on the Rocks
Writing on eggshells
Fish
Perches
Nurse Sharks
Lampreys
Food and Nutrition
Symbols from the Stone Age
Food for Life
The mercury in that tuna
GSAT English Rules
Whoever vs. Whomever
Order of Adjectives
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
GSAT Scholarship
The Annual GSAT Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT Mathematics
It's a Math World for Animals
Prime Time for Cicadas
Losing with Heads or Tails
Human Body
Taste Messenger
Hear, Hear
A Sour Taste in Your Mouth
Invertebrates
Starfish
Arachnids
Earthworms
Mammals
Humpback Whales
African Leopards
Horses
Parents
Expert report highlights the importance to parents of reading to children!
How children learn
Choosing a Preschool: What to Consider
Physics
Einstein's Skateboard
Gaining a Swift Lift
Spin, Splat, and Scramble
Plants
Getting the dirt on carbon
City Trees Beat Country Trees
Stalking Plants by Scent
Reptiles
Sea Turtles
Pythons
Copperhead Snakes
Space and Astronomy
Wrong-way planets do gymnastics
A Moon's Icy Spray
Zooming In on the Wild Sun
Technology and Engineering
Algae Motors
Smart Windows
Spinach Power for Solar Cells
The Parts of Speech
What is a Noun
What is a Verb?
Problems with Prepositions
Transportation
Are Propellers Fin-ished?
Seen on the Science Fair Scene
Troubles with Hubble
Weather
Science loses out when ice caps melt
Recipe for a Hurricane
Earth's Poles in Peril
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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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