Agriculture
Seeds of the Future
Protecting Cows—and People—from a Deadly Disease
Middle school science adventures
Amphibians
Bullfrogs
Frogs and Toads
Tree Frogs
Animals
No Fair: Monkey Sees, Doesn't
Roboroach and Company
Hot Pepper, Hot Spider
Behavior
Brain cells take a break
Why Cats Nap and Whales Snooze
Pipefish power from mom
Birds
Ducks
Nightingales
Kingfishers
Chemistry and Materials
A Framework for Growing Bone
Silk’s superpowers
Small but WISE
Computers
Toxic Dirt + Avian Flu = Science Fair Success
Electronic Paper Turns a Page
Lighting goes digital
Dinosaurs and Fossils
Hall of Dinos
Dino Flesh from Fossil Bone
The man who rocked biology to its core
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Results of GSAT are in schools this week
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Earth
A Global Warming Flap
Polar Ice Feels the Heat
Warmest Year on Record
Environment
The Oily Gulf
The Wolf and the Cow
Shrinking Fish
Finding the Past
Watching deep-space fireworks
Little People Cause Big Surprise
Digging Up Stone Age Art
Fish
Lungfish
Hammerhead Sharks
Puffer Fish
Food and Nutrition
Building a Food Pyramid
How Super Are Superfruits?
Moving Good Fats from Fish to Mice
GSAT English Rules
Who vs. Whom
Capitalization Rules
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
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Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
How are students placed after passing the GSAT exam
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GSAT Exam Preparation
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GSAT Mathematics
Math is a real brain bender
Detecting True Art
Setting a Prime Number Record
Human Body
Speedy Gene Gives Runners a Boost
Disease Detectives
Gut Germs to the Rescue
Invertebrates
Ticks
Invertebrates
Dust Mites
Mammals
Sheep
African Zebra
Elephants
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
Raise a Lifelong Reader by Reading Aloud
Physics
Spin, Splat, and Scramble
Road Bumps
Thinner Air, Less Splatter
Plants
Flower family knows its roots
Nature's Alphabet
Surprise Visitor
Reptiles
Tortoises
Sea Turtles
Rattlesnakes
Space and Astronomy
Super Star Cluster in the Neighborhood
The two faces of Mars
Killers from Outer Space
Technology and Engineering
A Satellite of Your Own
Space Umbrellas to Shield Earth
Musclebots Take Some Steps
The Parts of Speech
What is a Preposition?
Problems with Prepositions
Countable and Uncountable Nouns
Transportation
Robots on the Road, Again
Ready, unplug, drive
Flying the Hyper Skies
Weather
Weekend Weather Really Is Different
The solar system's biggest junkyard
A Dire Shortage of Water
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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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