Agriculture
Where Have All the Bees Gone?
Got Milk? How?
Chicken Eggs as Drug Factories
Amphibians
Bullfrogs
Tree Frogs
Poison Dart Frogs
Animals
No Fair: Monkey Sees, Doesn't
A Spider's Taste for Blood
Living in the Desert
Behavior
Dino-bite!
A Light Delay
Pollution at the ends of the Earth
Birds
Turkeys
Hummingbirds
Waterfowl
Chemistry and Materials
The Taste of Bubbles
The solar system's biggest junkyard
Sugary Survival Skill
Computers
Seen on the Science Fair Scene
Galaxies far, far, far away
The solar system's biggest junkyard
Dinosaurs and Fossils
Ancient Critter Caught Shedding Its Skin
The Paleontologist and the Three Dinosaurs
Feathered Fossils
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
Deep Drilling at Sea
Petrified Lightning
A Global Warming Flap
Environment
Seabirds Deliver Arctic Pollutants
Where rivers run uphill
A Stormy History
Finding the Past
Watching deep-space fireworks
A Long Haul
Salt and Early Civilization
Fish
Sturgeons
Flashlight Fishes
Lungfish
Food and Nutrition
The Color of Health
Turning to Sweets, Fats to Calm the Brain
Chocolate Rules
GSAT English Rules
Who vs. Whom
Pronouns
Capitalization Rules
GSAT Exam Preparation Jamaica
10 Common Mistakes When Preparing for the GSAT Math Test
The Annual GSAT Scholarships
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
GSAT Exam Preparation
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
How to Slice a Cake Fairly
Setting a Prime Number Record
Detecting True Art
Human Body
Spitting Up Blobs to Get Around
Heavy Sleep
Running with Sneaker Science
Invertebrates
Sea Urchin
Mosquitos
Camel Spiders
Mammals
Polar Bear
Wolverines
African Camels
Parents
Choosing a Preschool: What to Consider
Children and Media
Raise a Lifelong Reader by Reading Aloud
Physics
Gaining a Swift Lift
Einstein's Skateboard
Invisibility Ring
Plants
City Trees Beat Country Trees
Nature's Alphabet
When Fungi and Algae Marry
Reptiles
Crocodiles
Box Turtles
Crocodilians
Space and Astronomy
Asteroid Moons
Phantom Energy and the Big Rip
A Dusty Birthplace
Technology and Engineering
Smart Windows
Slip Sliming Away
A Satellite of Your Own
The Parts of Speech
Countable and Uncountable Nouns
Problems with Prepositions
What is a Verb?
Transportation
Robots on a Rocky Road
Seen on the Science Fair Scene
Middle school science adventures
Weather
A Dire Shortage of Water
Catching Some Rays
Weekend Weather Really Is Different
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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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