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A Jellyfish's Blurry View
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Missing Moose
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Girls are cool for school
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Lighting goes digital
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Two monkeys see a more colorful world
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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
Getting the dirt on carbon
Explorer of the Extreme Deep
Rocking the House
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Nanosponges Soak Up Pollutants
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Lessons from a Lonely Tortoise
Finding the Past
An Ancient Childhood
A Long Haul
Stone Tablet May Solve Maya Mystery
Fish
Hammerhead Sharks
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Moving Good Fats from Fish to Mice
Food for Life
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GSAT English Rules
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42,000 students will sit for the GSAT Exam in two weeks
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
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Results of GSAT are in schools this week
GSAT Exam Preparation
Access denied - Disabled boy aces GSAT
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Play for Science
GSAT Practice Papers | GSAT Mathematics | Maths
Math is a real brain bender
Human Body
Kids now getting 'adult' disease
Sun Screen
Workouts: Does Stretching Help?
Invertebrates
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Nautiluses
Mammals
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Cornish Rex
Parents
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
Raise a Lifelong Reader by Reading Aloud
Physics
Strange Universe: The Stuff of Darkness
Speedy stars
Echoes of a Stretched Egg
Plants
Fastest Plant on Earth
Stalking Plants by Scent
Assembling the Tree of Life
Reptiles
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Geckos
Space and Astronomy
Sounds of Titan
Planning for Mars
A Family in Space
Technology and Engineering
A Satellite of Your Own
Sugar Power for Cell Phones
Algae Motors
The Parts of Speech
Problems with Prepositions
What is a Noun
Pronouns
Transportation
Reach for the Sky
Are Propellers Fin-ished?
Ready, unplug, drive
Weather
Antarctica warms, which threatens penguins
Weekend Weather Really Is Different
A Dire Shortage of Water
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Heart Revival

When your heart works like it's supposed to, it keeps you alive and well. But when the heart fails, people can get very sick or even die. Now, scientists have found a way to turn dead rat hearts into living ones. It's a medical first, and the technique may eventually allow doctors to make new hearts from patients' own cells. This should largely avoid the risk that the patient's body will reject the new heart, which often happens today. Researchers from the University of Minnesota in Minneapolis started with hearts from rats that had been dead for less than 18 hours. Led by Doris A. Taylor, the scientists put the hearts in glass beakers and used a liquid detergent to wash away the dead cells. Left behind was a heart-shaped mass of proteins that normally surround heart cells and hold them together. The mass was translucent, which means it lets light through, and it had the consistency of Jell-O. Next, Taylor and her colleagues took cells from hearts of newborn rats. They injected these living cells into the hollowed-out hearts. Eight days later, the hearts were pumping weakly. And the injected cells in each heart beat synchronously—that is, all at the same time. "The fact that we can get these cells to beat synchronously is incredibly encouraging," Taylor says. It will be years before doctors might consider using this method to repair hearts in people, the scientists warn. In the study, the rebuilt hearts could pump blood only about 2 percent as fast as a normal adult rat heart can. Eventually, scientists would like to be able to use primitive stem cells from a patient's blood or heart tissue to repair his or her own organs.—Emily Sohn

Heart Revival
Heart Revival








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