Agriculture
Middle school science adventures
Silk’s superpowers
Growing Healthier Tomato Plants
Amphibians
Toads
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Bullfrogs
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G-Tunes with a Message
Ant Invasions Change the Rules
Fishy Cleaners
Behavior
Lost Sight, Found Sound
The Snappy Lingo of Instant Messages
Math is a real brain bender
Birds
Eagles
Doves
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Chemistry and Materials
A Framework for Growing Bone
Mother-of-Pearl on Ice
Makeup Science
Computers
Seen on the Science Fair Scene
A Light Delay
It's a Small E-mail World After All
Dinosaurs and Fossils
Hall of Dinos
Early Birds Ready to Rumble
Ancient Critter Caught Shedding Its Skin
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
Earth
A Volcano's Deadly Ash
Vitamin D-licious Mushrooms
Rocking the House
Environment
Easy Ways to Conserve Water
Alien Invasions
Hazy with a Chance of Sunshine
Finding the Past
Words of the Distant Past
Early Maya Writing
Stone Age Sole Survivors
Fish
Angler Fish
Saltwater Fish
Trout
Food and Nutrition
A Pepper Part that Burns Fat
Moving Good Fats from Fish to Mice
Healing Honey
GSAT English Rules
Whoever vs. Whomever
Who vs. Whom
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Losing with Heads or Tails
42,000 students will sit for the GSAT Exam in two weeks
How a Venus Flytrap Snaps Shut
Human Body
Hey batter, wake up!
Don't Eat That Sandwich!
Disease Detectives
Invertebrates
Black Widow spiders
Wasps
Crustaceans
Mammals
Armadillo
Elk
Cheetah
Parents
How children learn
Choosing a Preschool: What to Consider
What Not to Say to Emerging Readers
Physics
Black Hole Journey
Road Bumps
Spin, Splat, and Scramble
Plants
Getting the dirt on carbon
Underwater Jungles
Making the most of a meal
Reptiles
Box Turtles
Caimans
Lizards
Space and Astronomy
Zooming In on the Wild Sun
Icy Red Planet
Phantom Energy and the Big Rip
Technology and Engineering
Crime Lab
Roll-Up Computer Monitors to Go
Morphing a Wing to Save Fuel
The Parts of Speech
What is a Verb?
Countable and Uncountable Nouns
Problems with Prepositions
Transportation
Charged cars that would charge
Flying the Hyper Skies
Troubles with Hubble
Weather
Warmest Year on Record
Catching Some Rays
Arctic Melt
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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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