Agriculture
Protecting Cows—and People—from a Deadly Disease
Getting the dirt on carbon
Silk’s superpowers
Amphibians
Poison Dart Frogs
Frogs and Toads
Tree Frogs
Animals
Pothole Repair, Insect-style
Sea Lilies on the Run
Stunts for High-Diving Ants
Behavior
A Grim Future for Some Killer Whales
Meet your mysterious relative
Longer lives for wild elephants
Birds
Woodpecker
Flamingos
Carnivorous Birds
Chemistry and Materials
Batteries built by Viruses
Heaviest named element is official
Getting the dirt on carbon
Computers
Play for Science
Lighting goes digital
Two monkeys see a more colorful world
Dinosaurs and Fossils
Dino Flesh from Fossil Bone
Have shell, will travel
Mini T. rex
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
A Dire Shortage of Water
Pollution at the ends of the Earth
Hints of Life in Ancient Lava
Environment
Pollution Detective
Will Climate Change Depose Monarchs?
Indoor ozone stopper
Finding the Past
Ancient Art on the Rocks
An Ancient Childhood
A Human Migration Fueled by Dung?
Fish
Seahorses
Trout
A Jellyfish's Blurry View
Food and Nutrition
Building a Food Pyramid
How Super Are Superfruits?
The mercury in that tuna
GSAT English Rules
Order of Adjectives
Subject and Verb Agreement
Who vs. Whom
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Mastering The GSAT Exam
GSAT Exams Jamaica Scholarships
42,000 students will sit for the GSAT Exam in two weeks
Results of GSAT are in schools this week
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Math Naturals
Math is a real brain bender
Detecting True Art
Human Body
Foul Play?
Smiles Turn Away Colds
Attacking Asthma
Invertebrates
Fleas
Beetles
Black Widow spiders
Mammals
Moose
African Camels
Persian Cats
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
Children and Media
Physics
One ring around them all
Powering Ball Lightning
Road Bumps
Plants
Pumping Up Poison Ivy
City Trees Beat Country Trees
Getting the dirt on carbon
Reptiles
Cobras
Lizards
Gila Monsters
Space and Astronomy
Saturn's Spongy Moon
An Icy Blob of Fluff
Catching a Comet's Tail
Technology and Engineering
Roll-Up Computer Monitors to Go
Algae Motors
Morphing a Wing to Save Fuel
The Parts of Speech
Problems with Prepositions
Countable and Uncountable Nouns
What is a Noun
Transportation
Robots on a Rocky Road
Tinkering With the Basic Bike
Charged cars that would charge
Weather
A Change in Climate
Science loses out when ice caps melt
Weekend Weather Really Is Different
Add your Article

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








Designed and Powered by HBJamaica.com™