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2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Giving Sharks Safe Homes
Groundwater and the Water Cycle
A Grim Future for Some Killer Whales
Environment
City Trees Beat Country Trees
The Oily Gulf
What is groundwater
Finding the Past
Stone Tablet May Solve Maya Mystery
A Human Migration Fueled by Dung?
Unearthing Ancient Astronomy
Fish
Codfish
A Grim Future for Some Killer Whales
Pygmy Sharks
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Eat Out, Eat Smart
Yummy bugs
Making good, brown fat
GSAT English Rules
Pronouns
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Whoever vs. Whomever
GSAT Exam Preparation Jamaica
Mastering The GSAT Exam
Ministry of Education Announces 82 GSAT Scholarships for 2010
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
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2014 GSAT Results for Jamaican Kids
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How a Venus Flytrap Snaps Shut
GSAT Practice Papers | GSAT Mathematics | Maths
Human Body
Walking to Exercise the Brain
Electricity's Spark of Life
Music in the Brain
Invertebrates
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Hoofed Mammals
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Raise a Lifelong Reader by Reading Aloud
Choosing a Preschool: What to Consider
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Dreams of Floating in Space
Strange Universe: The Stuff of Darkness
One ring around them all
Plants
Sweet, Sticky Science
Fastest Plant on Earth
City Trees Beat Country Trees
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Sounds of Titan
Pluto's New Moons
A Great Ball of Fire
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Smart Windows
A Micro-Dose of Your Own Medicine
Riding Sunlight
The Parts of Speech
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What is a Noun
Transportation
Flying the Hyper Skies
Revving Up Green Machines
Robots on a Rocky Road
Weather
Either Martians or Mars has gas
Arctic Melt
Watering the Air
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Awake at Night

The less sleep I get, the unhappier I become. When I'm really tired, I have trouble concentrating. I can't get any work done. I get cranky and irritable, and everything starts to annoy me. I know lots of people just like me, but I also have friends who can stay up all night and still seem chipper the next day. How well do you fare after a slumber-less sleepover? Scientists have been studying sleep for decades, but they still know very little about the genes involved. Genes are stretches of DNA found within every cell. They direct all sorts of processes in the body. Sleep researchers from the University of Wisconsin–Madison decided to focus on certain fruit flies (called Drosophila melanogaster) because their genes are easy to study and similar to ours. Fruit flies also sleep a lot, typically 9 to 15 hours a day. A sleeping fly looks like it's just sitting still. You can't hear the snores. The researchers collected more than 9,000 groups of fruit flies. Each group had a different set of genes. The scientists then observed several flies of each type to see how many hours a day the insects slept and how they behaved after being kept awake for 24 hours. One group of flies proved to be the most interesting. Named minisleep flies, they slept only 4 to 5 hours a day. Even after 24 hours without sleep, they did just as well on reaction tests as rested flies did. Normal sleep-deprived flies were much slower to react. After a series of tests, the scientists discovered one mutation in a single gene in the minisleep flies. As a result, these flies have nerves that appear to get excited easily. It's possible that people who don't need much sleep have a similar mutation. In every other way, minisleep flies seemed normal—except one. Most fruit flies live for about 3 or 4 months. The minisleepers lived about 2 weeks less. So, even if you feel fine on little sleep, the researchers say, skimping on sleep might affect your health in other ways. Knowing that, I'm going to make sure to sleep in tomorrow. If nothing else, I'll be a lot more pleasant to be around.—E. Sohn

Awake at Night
Awake at Night








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