Agriculture
Growing Healthier Tomato Plants
Watering the Air
Watching out for vultures
Amphibians
Salamanders
Poison Dart Frogs
Salamanders and Newts
Animals
Mating Slows Down Prairie Dogs
Koalas, Up Close and Personal
Big Squid
Behavior
Body clocks
Wake Up, Sleepy Gene
Monkeys in the Mirror
Birds
Cranes
Backyard Birds
Rheas
Chemistry and Materials
The Incredible Shrunken Kids
The chemistry of sleeplessness
Sugary Survival Skill
Computers
Music of the Future
Hitting the redo button on evolution
Games with a Purpose
Dinosaurs and Fossils
Dino-bite!
Meet your mysterious relative
An Ancient Feathered Biplane
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Detecting an Eerie Sea Glow
Life trapped under a glacier
A Global Warming Flap
Environment
Alien Invasions
Snow Traps
Giant snakes invading North America
Finding the Past
Stonehenge Settlement
Settling the Americas
Watching deep-space fireworks
Fish
Cleaning Up Fish Farms
Flashlight Fishes
Carp
Food and Nutrition
The mercury in that tuna
Food for Life
A Pepper Part that Burns Fat
GSAT English Rules
Problems with Prepositions
Who vs. Whom
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
How are students placed after passing the GSAT exam
GSAT Scholarship
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
GSAT stars reap scholarship glory
GSAT Exam Preparation
GSAT Mathematics
It's a Math World for Animals
Math is a real brain bender
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Heavy Sleep
Hey batter, wake up!
Gut Microbes and Weight
Invertebrates
Starfish
Crabs
Roundworms
Mammals
Rats
Ponies
Bobcats
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
Raise a Lifelong Reader by Reading Aloud
Choosing a Preschool: What to Consider
Physics
One ring around them all
Road Bumps
The Mirror Universe of Antimatter
Plants
Stalking Plants by Scent
Fastest Plant on Earth
Underwater Jungles
Reptiles
Asp
Black Mamba
Boa Constrictors
Space and Astronomy
Saturn's New Moons
Roving the Red Planet
Icy Red Planet
Technology and Engineering
Morphing a Wing to Save Fuel
Riding Sunlight
A Light Delay
The Parts of Speech
What is a Verb?
Adjectives and Adverbs
Countable and Uncountable Nouns
Transportation
Tinkering With the Basic Bike
Charged cars that would charge
Seen on the Science Fair Scene
Weather
Weekend Weather Really Is Different
Arctic Melt
Recipe for a Hurricane
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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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