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Hungry bug seeks hot meal
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The Smell of Trust
The Disappearing Newspaper
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Silk’s superpowers
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The newest superheavy in town
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Two monkeys see a more colorful world
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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
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Coral Islands Survive a Tsunami
Petrified Lightning
Killer Space Rock Snuffed Out Ancient Life
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Plant Gas
Inspired by Nature
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Little People Cause Big Surprise
A Long Haul
Your inner Neandertal
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Basking Sharks
Mahi-Mahi
Goldfish
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Allergies: From Bee Stings to Peanuts
How Super Are Superfruits?
Packing Fat
GSAT English Rules
Subject and Verb Agreement
Capitalization Rules
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GSAT Exam Preparation Jamaica
2014 GSAT Results for Jamaican Kids
Mastering The GSAT Exam
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Scholarship
42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Play for Science
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Losing with Heads or Tails
Human Body
A Better Flu Shot
Football Scrapes and Nasty Infections
Speedy Gene Gives Runners a Boost
Invertebrates
Octopuses
Daddy Long Legs
Spiders
Mammals
Beavers
Koalas
Opposum
Parents
Expert report highlights the importance to parents of reading to children!
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
Physics
Invisibility Ring
Echoes of a Stretched Egg
The Particle Zoo
Plants
Bright Blooms That Glow
A Giant Flower's New Family
Flower family knows its roots
Reptiles
Box Turtles
Crocodilians
Reptiles
Space and Astronomy
Pluto, plutoid: What's in a name?
Tossing Out a Black Hole Life Preserver
A Great Ball of Fire
Technology and Engineering
Smart Windows
Model Plane Flies the Atlantic
Morphing a Wing to Save Fuel
The Parts of Speech
What is a Noun
What is a Preposition?
What is a Verb?
Transportation
Are Propellers Fin-ished?
Middle school science adventures
Flying the Hyper Skies
Weather
In Antarctica watch the heat (and your step)
Earth's Poles in Peril
A Change in Climate
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Spinach Power for Solar Cells

Popeye uses spinach to power his muscles. Now, scientists are looking to spinach as a power source for supplying electricity. A solar cell converts sunlight into electricity. Most solar cells on the market today are made of a material called silicon. The new device, on the other hand, uses proteins from spinach and from a bacterium named Rhodobacter sphaeroides. To make the solar cell, a team of biologists and chemists from the Massachusetts Institute of Technology extracted certain light-sensitive proteins from spinach and bacteria. They put about 2 billion of these proteins on a piece of glass, making the proteins stick by embedding them in a special framework that looks and acts like a cell membrane. The researchers then put the layer of proteins between layers of other materials called semiconductors, which carry electricity. When the scientists shone certain types of light on the device, the proteins absorbed the light and sent electrons through the semiconductor to an electrode. This activity caused an electric current to flow. At this early stage in the research, the spinach cell isn't efficient enough to be useful. To improve their solar cell, the researchers want to jam more proteins into a single device. They also want such solar cells to stay active for a long time. One hope is that protein-based solar cells could repair themselves, just like living plants replace their own proteins over time. If it all works out, there may be a new way to harvest the sun's energy. Instead of having to eat your spinach, you might find that the leafy green could someday power your TV set.—E. Sohn

Spinach Power for Solar Cells
Spinach Power for Solar Cells








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