Getting the dirt on carbon
Silk’s superpowers
Vitamin D-licious Mushrooms
Frogs and Toads
Fishy Sounds
Jay Watch
Crocodile Hearts
The Snappy Lingo of Instant Messages
The chemistry of sleeplessness
Supersonic Splash
Chemistry and Materials
When frog gender flips
Smelly Traps for Lampreys
Salt secrets
Programming with Alice
The Earth-bound asteroid scientists saw coming
Getting in Touch with Touch
Dinosaurs and Fossils
Big Fish in Ancient Waters
The bug that may have killed a dinosaur
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's Lowly Rumble
Wave of Destruction
Weird, new ant
Food Web Woes
A Change in Leaf Color
The Oily Gulf
Finding the Past
Unearthing Ancient Astronomy
Oldest Writing in the New World
Little People Cause Big Surprise
Skates and Rays
A Jellyfish's Blurry View
Bull Sharks
Food and Nutrition
Making good, brown fat
Packing Fat
Strong Bones for Life
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
Problems with Prepositions
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Scholarship
GSAT Exams Jamaica Scholarships
GSAT Scholarship
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GSAT stars reap scholarship glory
GSAT Mathematics
Secrets of an Ancient Computer
Math and our number sense:
Prime Time for Cicadas
Human Body
Smiles Turn Away Colds
Spitting Up Blobs to Get Around
Music in the Brain
Black Widow spiders
Siamese Cats
Black Bear
Choosing a Preschool: What to Consider
Expert report highlights the importance to parents of reading to children!
How children learn
Project Music
Speedy stars
Road Bumps
Stalking Plants by Scent
Assembling the Tree of Life
Getting the dirt on carbon
Copperhead Snakes
Space and Astronomy
Witnessing a Rare Venus Eclipse
Wrong-way planets do gymnastics
Rover Makes Splash on Mars
Technology and Engineering
Young Scientists Take Flight
Beyond Bar Codes
Supersuits for Superheroes
The Parts of Speech
Countable and Uncountable Nouns
Adjectives and Adverbs
What is a Noun
Seen on the Science Fair Scene
Troubles with Hubble
Ready, unplug, drive
Science loses out when ice caps melt
Earth's Poles in Peril
Where rivers run uphill
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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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