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Treating peanut allergy bit by bit
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Springing forward
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Poor Devils
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Copycat Monkeys
Dino-bite!
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The solar system's biggest junkyard
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Electronic Paper Turns a Page
Lighting goes digital
Earth from the inside out
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Supersight for a Dino King
Dinosaurs Grow Up
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
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A Volcano Wakes Up
Killer Space Rock Snuffed Out Ancient Life
Coral Islands Survive a Tsunami
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Spotty Survival
To Catch a Dragonfly
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Finding the Past
Decoding a Beverage Jar
If Only Bones Could Speak
An Ancient Childhood
Fish
Mako Sharks
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Salmon
Food and Nutrition
The Color of Health
Allergies: From Bee Stings to Peanuts
Strong Bones for Life
GSAT English Rules
Capitalization Rules
Whoever vs. Whomever
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
Mastering The GSAT Exam
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
Access denied - Disabled boy aces GSAT
GSAT Scholarship
GSAT Mathematics
Deep-space dancers
Math is a real brain bender
Secrets of an Ancient Computer
Human Body
A Better Flu Shot
Electricity's Spark of Life
Don't Eat That Sandwich!
Invertebrates
Tarantula
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Dragonflies
Mammals
Foxes
Coyotes
Rottweilers
Parents
Choosing a Preschool: What to Consider
The Surprising Meaning and Benefits of Nursery Rhymes
Children and Media
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Dreams of Floating in Space
Speedy stars
Strange Universe: The Stuff of Darkness
Plants
Underwater Jungles
Bright Blooms That Glow
Cactus Goo for Clean Water
Reptiles
Black Mamba
Iguanas
Copperhead Snakes
Space and Astronomy
Burst Busters
A Smashing Display
Holes in Martian moon mystery
Technology and Engineering
A Clean Getaway
Bionic Bacteria
A Micro-Dose of Your Own Medicine
The Parts of Speech
Pronouns
Problems with Prepositions
Adjectives and Adverbs
Transportation
Are Propellers Fin-ished?
Ready, unplug, drive
Tinkering With the Basic Bike
Weather
A Dire Shortage of Water
Arctic Melt
Watering the Air
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Electric Backpack

Backpacks are convenient. They can hold your books, your lunch, and a change of clothes, leaving your hands free to do other things. Someday, if you don't mind carrying a heavy load, your backpack might also power your MP3 player, keep your cell phone running, and maybe even light your way home. Scientists from the University of Pennsylvania in Philadelphia and the Marine Biological Laboratory in Woods Hole, Mass., have invented a backpack that makes electricity from energy produced while its wearer walks. The backpack's electricity-creating powers depend on springs used to hang a cloth pack from its metal frame. The frame sits against the wearer's back, and the whole pack moves up and down as the person walks. A mechanism with gears collects energy from this motion and transfers it to an electrical generator. Surprisingly, the researchers found, people walk differently when they wear the springy packs. As a result, wearers use less energy than when lugging regular backpacks. Also, the way the new packs ride on wearers' backs makes them more comfortable than standard packs, the inventors say. The backpack could be especially useful for soldiers, scientists, mountaineers, and emergency workers who typically carry heavy backpacks. These people often rely on global positioning system (GPS) receivers, night-vision goggles, and other battery-powered devices to get around and do their work. Because the pack can make its own electricity, users don't need to give up space in their packs to lots of extra batteries. For the rest of us, power-generating backpacks could make it possible to walk, play video games, watch TV, and listen to music, all at the same time. Electricity-generating packs aren't on the market yet, but if you do get one eventually, just make sure to look both ways before crossing the street!E. Sohn

Electric Backpack
Electric Backpack








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