Flush-Free Fertilizer
Treating peanut allergy bit by bit
Got Milk? How?
Frogs and Toads
No Fair: Monkey Sees, Doesn't
Little Bee Brains That Could
Thieves of a Feather
Giving Sharks Safe Homes
Fish needs see-through head
Hitting the redo button on evolution
Chemistry and Materials
Moon Crash, Splash
A New Basketball Gets Slick
The chemistry of sleeplessness
The science of disappearing
Secrets of an Ancient Computer
Electronic Paper Turns a Page
Dinosaurs and Fossils
A Rainforest Trapped in Amber
Mini T. rex
A Dino King's Ancestor
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
A Dire Shortage of Water
Riding to Earth's Core
Killer Space Rock Snuffed Out Ancient Life
The Down Side of Keeping Clean
Groundwater and the Water Cycle
Where rivers run uphill
Finding the Past
A Human Migration Fueled by Dung?
Big Woman of the Distant Past
Ancient Art on the Rocks
Skates and Rays
Food and Nutrition
Food for Life
Eat Out, Eat Smart
Making good, brown fat
GSAT English Rules
Capitalization Rules
Subject and Verb Agreement
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
Tarrant High overcoming the odds
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
Preparing for 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
Prime Time for Cicadas
Deep-space dancers
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Remembering Facts and Feelings
Nature's Medicines
The tell-tale bacteria
Dust Mites
Hermit Crabs
Tasmanian Devil
Sloth Bears
African Wildedbeest
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
What Not to Say to Emerging Readers
The Pressure of Scuba Diving
Project Music
Extra Strings for New Sounds
Farms sprout in cities
Seeds of the Future
Getting the dirt on carbon
Garter Snakes
Space and Astronomy
Burst Busters
A Great Ball of Fire
Intruder Alert: Sweeping Space for Dust
Technology and Engineering
Machine Copy
Dancing with Robots
A Clean Getaway
The Parts of Speech
What is a Verb?
What is a Noun
What is a Preposition?
Middle school science adventures
Tinkering With the Basic Bike
Reach for the Sky
Arctic Melt
Earth's Poles in Peril
Watering the Air
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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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