Agriculture
Getting the dirt on carbon
Middle school science adventures
Got Milk? How?
Amphibians
Newts
Frogs and Toads
Bullfrogs
Animals
Monkeys Count
New Mammals
Elephant Mimics
Behavior
Brain cells take a break
A Grim Future for Some Killer Whales
Face values
Birds
Condors
Kookaburras
Tropical Birds
Chemistry and Materials
Meteorites may have sparked life on Earth
Boosting Fuel Cells
The hungry blob at the edge of the universe
Computers
Small but WISE
Toxic Dirt + Avian Flu = Science Fair Success
Seen on the Science Fair Scene
Dinosaurs and Fossils
Fossil Forests
Dino-Dining Dinosaurs
Fossil Fly from Antarctica
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Meteorites may have sparked life on Earth
Ice Age Melting and Rising Seas
Less Mixing Can Affect Lake's Ecosystem
Environment
Ready, unplug, drive
Acid Snails
Flu river
Finding the Past
Stone Tablet May Solve Maya Mystery
Sahara Cemetery
Salt and Early Civilization
Fish
White Tip Sharks
Hagfish
Tilapia
Food and Nutrition
Moving Good Fats from Fish to Mice
Eat Out, Eat Smart
Packing Fat
GSAT English Rules
Adjectives and Adverbs
Capitalization Rules
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Scholarship
GSAT Exam Preparation
GSAT Mathematics
Losing with Heads or Tails
Setting a Prime Number Record
Monkeys Count
Human Body
Running with Sneaker Science
Opening a Channel for Tasting Salt
Sleeping Soundly for a Longer Life
Invertebrates
Nautiluses
Snails
Sponges
Mammals
Goats
Dalmatians
Wildcats
Parents
Children and Media
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
Physics
Road Bumps
Invisibility Ring
The Particle Zoo
Plants
Stalking Plants by Scent
Hungry bug seeks hot meal
Sweet, Sticky Science
Reptiles
Chameleons
Reptiles
Copperhead Snakes
Space and Astronomy
A Star's Belt of Dust and Rocks
A Great Ball of Fire
The two faces of Mars
Technology and Engineering
Searching for Alien Life
A Clean Getaway
A Micro-Dose of Your Own Medicine
The Parts of Speech
Pronouns
What is a Verb?
Adjectives and Adverbs
Transportation
Tinkering With the Basic Bike
Where rivers run uphill
Flying the Hyper Skies
Weather
The solar system's biggest junkyard
A Dire Shortage of Water
Earth's Poles in Peril
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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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