Agriculture
Silk’s superpowers
Making the most of a meal
Cleaning Up Fish Farms
Amphibians
Frogs and Toads
Salamanders
Tree Frogs
Animals
Feeding School for Meerkats
Sea Giants and Island Pygmies
Walks on the Wild Side
Behavior
Swedish Rhapsody
A Grim Future for Some Killer Whales
The nerve of one animal
Birds
Parrots
Penguins
Owls
Chemistry and Materials
Meteorites may have sparked life on Earth
Butterfly Wings and Waterproof Coats
The hungry blob at the edge of the universe
Computers
A Light Delay
Hitting the redo button on evolution
The science of disappearing
Dinosaurs and Fossils
The Paleontologist and the Three Dinosaurs
Tiny Pterodactyl
Have shell, will travel
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
A Dire Shortage of Water
Ancient Heights
Pollution at the ends of the Earth
Environment
Little Bits of Trouble
The Oily Gulf
Nanosponges Soak Up Pollutants
Finding the Past
The Puzzle of Ancient Mariners
Your inner Neandertal
Digging Up Stone Age Art
Fish
Tuna
Freshwater Fish
Basking Sharks
Food and Nutrition
How Super Are Superfruits?
Packing Fat
Building a Food Pyramid
GSAT English Rules
Subject and Verb Agreement
Who vs. Whom
Order of Adjectives
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT stars reap scholarship glory
GSAT Exam Preparation
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Secrets of an Ancient Computer
Math of the World
Math Naturals
Human Body
Teen Brains, Under Construction
A Long Haul
From Stem Cell to Any Cell
Invertebrates
Flies
Butterflies
Scorpions
Mammals
Deers
Rottweilers
Mule
Parents
Children and Media
Expert report highlights the importance to parents of reading to children!
How children learn
Physics
Road Bumps
Einstein's Skateboard
The Mirror Universe of Antimatter
Plants
Pumping Up Poison Ivy
Fastest Plant on Earth
Sweet, Sticky Science
Reptiles
Snapping Turtles
Turtles
Black Mamba
Space and Astronomy
Galaxies Divide Sharply Along Color Lines
A Whole Lot of Nothing
Ringing Saturn
Technology and Engineering
Drawing Energy out of Wastewater
A Satellite of Your Own
Reach for the Sky
The Parts of Speech
Pronouns
What is a Noun
What is a Verb?
Transportation
Where rivers run uphill
Revving Up Green Machines
Tinkering With the Basic Bike
Weather
A Change in Climate
Polar Ice Feels the Heat
Warmest Year on Record
Add your Article

Putting a Mouse on Pause

Do you hate cold winters, or do you have a tough week coming up? Someday, you might be able to hibernate through them! Scientists have found a way to bring breathing and heart rate nearly to a standstill in mice without killing them. It doesn't even seem to harm the mice. This is the first time that scientists have induced a state of "suspended animation" in a mammal that doesn't normally go into such a state on its own. Some animals regularly slow down their metabolic rates, or the speed at which their bodies function. Every day, for example, certain types of hummingbirds go into a state called torpor. Their heart rates drop, breathing slows, and body temperature plunges. Animals such as bears go into a similar type of hibernation for entire seasons. Scientists would love to find a way to put people into a state of torpor. Suspended animation could offer protection after a heart attack or stroke, and it could help people survive while waiting for an organ transplant. Previously, scientists had used a type of gas called hydrogen sulfide to induce torpor in yeast, worms, and flies. Mark Roth and his coworkers at the Fred Hutchinson Cancer Research Center in Seattle tried the same thing with common lab mice. These mice don't normally show any type of hibernation behavior. The researchers put mice in chambers containing low concentrations of hydrogen sulfide. The gas smells like rotten eggs. Within minutes of breathing it in, the mice stopped moving and seemed unconscious. Over then next 6 hours, their breathing rate dropped from 120 breaths per minute to fewer than 10. Their body temperatures, usually a toasty 37 degrees C (98.6 degrees F), fell in some cases to as low as 11 degrees C (51.8 degrees F). When the mice were able to breathe normal air again, their breathing rates and body temperatures went back up to normal. Tests showed no lasting damage. The scientists speculate that hydrogen sulfide works by substituting for oxygen inside the parts of cells that produce energy. The study might help explain how natural hibernators kick-start their winter rest. However, only future research will tell whether people can be put into a state resembling hibernation.—E. Sohn

Putting a Mouse on Pause
Putting a Mouse on Pause








Designed and Powered by HBJamaica.com™