Agriculture
Silk’s superpowers
Chicken Eggs as Drug Factories
Watching out for vultures
Amphibians
Salamanders and Newts
Tree Frogs
Salamanders
Animals
Jay Watch
From Chimps to People
Ultrasonic Frogs Raise the Pitch
Behavior
Making light of sleep
Body clocks
The Electric Brain
Birds
Swans
Mockingbirds
Geese
Chemistry and Materials
Supersonic Splash
The solar system's biggest junkyard
Bandages that could bite back
Computers
The Shape of the Internet
New eyes to scan the skies
Look into My Eyes
Dinosaurs and Fossils
Ferocious Growth Spurts
Dino Babies
The bug that may have killed a dinosaur
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Slip Slidin' Away—Under the Sea
Shrinking Glaciers
Coral Islands Survive a Tsunami
Environment
Where rivers run uphill
Alien Invasions
Flu river
Finding the Past
Unearthing Ancient Astronomy
Prehistoric Trips to the Dentist
Oldest Writing in the New World
Fish
Puffer Fish
Tilapia
Seahorses
Food and Nutrition
Making good, brown fat
Symbols from the Stone Age
Food for Life
GSAT English Rules
Finding Subjects and Verbs
Who vs. Whom
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
42,000 students will sit for the GSAT Exam in two weeks
GSAT Scholarship
How are students placed after passing the GSAT exam
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
Prime Time for Cicadas
Play for Science
How to Slice a Cake Fairly
Human Body
From Stem Cell to Any Cell
Spit Power
Remembering Facts and Feelings
Invertebrates
Roundworms
Mosquitos
Corals
Mammals
Seal
African Warthogs
Miscellaneous Mammals
Parents
What Not to Say to Emerging Readers
Choosing a Preschool: What to Consider
How children learn
Physics
One ring around them all
Project Music
Dreams of Floating in Space
Plants
Surprise Visitor
Flower family knows its roots
A Giant Flower's New Family
Reptiles
Anacondas
Rattlesnakes
Black Mamba
Space and Astronomy
Killers from Outer Space
Zooming In on the Wild Sun
Chaos Among the Planets
Technology and Engineering
A Satellite of Your Own
Switchable Lenses Improve Vision
Musclebots Take Some Steps
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
What is a Verb?
Transportation
Are Propellers Fin-ished?
Seen on the Science Fair Scene
Middle school science adventures
Weather
In Antarctica watch the heat (and your step)
Watering the Air
Either Martians or Mars has gas
Add your Article

Weekend Weather Really Is Different

Do you ever feel like the weather is out to get you? All week long, it seems, you sit inside at school while the sun shines outside. Then, as soon as the weekend comes, the sky turns gray. There's rain in the forecast. In some ways, you may be right. Weekend weather differs from weekday weather in certain places, say researchers who studied more than 40 years of weather data from around the world. They focused on temperature differences between daytime highs and nighttime lows. This difference measurement is called the diurnal temperature range, or DTR. Part of the study involved 660 weather stations in the continental United States. At more than 230 of these sites, the average DTR for Saturday, Sunday, and Monday was different from the average DTR for Wednesday, Thursday, and Friday, the researchers found. The difference was small—only several tenths of a Celsius degree—but the pattern was striking enough to make the scientists take notice. In the southwestern U.S., temperature ranges were typically broader on weekends. In the Midwest, weekdays saw larger daily temperature variations. This sort of weekly rise and fall doesn't line up with any natural cycles, the researchers say. Instead, they blame human activities, possibly air pollution from those activities, for these weather effects. For example, tiny particles in the air could affect the amount of cloud cover, which would in turn affect daily temperatures. So, tiny windborne particles from California, generated on weekdays, might first affect weather close to home in the southwest, then later influence midwestern weather. It looks like your weekend weather has a lot do with which way the wind blows and where it comes from.—E. Sohn

Weekend Weather Really Is Different
Weekend Weather Really Is Different








Designed and Powered by HBJamaica.com™