Agriculture
Flush-Free Fertilizer
Making the most of a meal
Seeds of the Future
Amphibians
Toads
Frogs and Toads
Newts
Animals
Elephant Mimics
A Sense of Danger
Polly Shouldn't Get a Cracker
Behavior
Body clocks
From dipping to fishing
The Other Side of the Zoo Fence
Birds
Rheas
Turkeys
Lovebirds
Chemistry and Materials
Screaming for Ice Cream
The Buzz about Caffeine
Bang, Sparkle, Burst, and Boom
Computers
Toxic Dirt + Avian Flu = Science Fair Success
It's a Small E-mail World After All
Batteries built by Viruses
Dinosaurs and Fossils
Mammals in the Shadow of Dinosaurs
Fossil Forests
Dino Takeout for Mammals
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
Flower family knows its roots
On the Trail of America's Next Top Scientists
A Volcano Wakes Up
Environment
When Fungi and Algae Marry
Out in the Cold
Easy Ways to Conserve Water
Finding the Past
Meet your mysterious relative
Of Lice and Old Clothes
Writing on eggshells
Fish
Electric Catfish
Goldfish
Lungfish
Food and Nutrition
Building a Food Pyramid
Recipe for Health
Chew for Health
GSAT English Rules
Capitalization Rules
Pronouns
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
GSAT Exam Preparation
Ministry of Education Announces 82 GSAT Scholarships for 2010
Preparing for the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Access denied - Disabled boy aces GSAT
Results of GSAT are in schools this week
GSAT Mathematics
Math is a real brain bender
Math Naturals
Play for Science
Human Body
Running with Sneaker Science
Speedy Gene Gives Runners a Boost
Fighting Off Micro-Invader Epidemics
Invertebrates
Fleas
Mosquitos
Jellyfish
Mammals
Cheetah
Dolphins
Humans
Parents
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
Physics
Echoes of a Stretched Egg
Thinner Air, Less Splatter
Hold on to your stars, ladies and gentlemen
Plants
Farms sprout in cities
Making the most of a meal
Underwater Jungles
Reptiles
Reptiles
Snakes
Crocodilians
Space and Astronomy
Rover Makes Splash on Mars
Melting Snow on Mars
Big Galaxy Swallows Little Galaxy
Technology and Engineering
Space Umbrellas to Shield Earth
Weaving with Light
A Satellite of Your Own
The Parts of Speech
Pronouns
What is a Preposition?
Countable and Uncountable Nouns
Transportation
Reach for the Sky
Middle school science adventures
Revving Up Green Machines
Weather
A Dire Shortage of Water
Polar Ice Feels the Heat
Warmest Year on Record
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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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