Agriculture
Keeping Bugs Away from Food
Watching out for vultures
Earth-Friendly Fabrics
Amphibians
Frogs and Toads
Tree Frogs
Bullfrogs
Animals
Tool Use Comes Naturally to Crows
Pothole Repair, Insect-style
Assembling the Tree of Life
Behavior
How Much Babies Know
Flower family knows its roots
Wired for Math
Birds
Vultures
Mockingbirds
Rheas
Chemistry and Materials
Earth-Friendly Fabrics
Supersonic Splash
A New Basketball Gets Slick
Computers
Graphene's superstrength
Galaxies on the go
Toxic Dirt + Avian Flu = Science Fair Success
Dinosaurs and Fossils
Feathered Fossils
Mammals in the Shadow of Dinosaurs
Dino Takeout for Mammals
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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
Coral Islands Survive a Tsunami
Vitamin D-licious Mushrooms
Earth's Poles in Peril
Environment
Pumping Up Poison Ivy
A Change in Climate
Cactus Goo for Clean Water
Finding the Past
Watching deep-space fireworks
Oldest Writing in the New World
Ancient Cave Behavior
Fish
Nurse Sharks
Mahi-Mahi
Angler Fish
Food and Nutrition
Eat Out, Eat Smart
Healing Honey
Yummy bugs
GSAT English Rules
Adjectives and Adverbs
Finding Subjects and Verbs
Order of Adjectives
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Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
2014 GSAT Results for Jamaican Kids
The Annual GSAT Scholarships
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42,000 students will sit for the GSAT Exam in two weeks
Results of GSAT are in schools this week
GSAT Scholarship
GSAT Mathematics
Secrets of an Ancient Computer
Losing with Heads or Tails
Setting a Prime Number Record
Human Body
Prime Time for Broken Bones
Germ Zapper
Cell Phone Tattlers
Invertebrates
Clams
Horseshoe Crabs
Snails
Mammals
African Hyenas
Raccoons
Killer Whales
Parents
Children and Media
How children learn
What Not to Say to Emerging Readers
Physics
Black Hole Journey
Extra Strings for New Sounds
Strange Universe: The Stuff of Darkness
Plants
Fastest Plant on Earth
Assembling the Tree of Life
Cactus Goo for Clean Water
Reptiles
Tortoises
Copperhead Snakes
Iguanas
Space and Astronomy
A Dusty Birthplace
Catching a Comet's Tail
Asteroid Moons
Technology and Engineering
A Clean Getaway
Switchable Lenses Improve Vision
Machine Copy
The Parts of Speech
Adjectives and Adverbs
What is a Noun
Problems with Prepositions
Transportation
Ready, unplug, drive
Seen on the Science Fair Scene
Where rivers run uphill
Weather
Polar Ice Feels the Heat
Antarctica warms, which threatens penguins
Arctic Melt
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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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