Keeping Bugs Away from Food
Fast-flying fungal spores
Making the most of a meal
Salamanders and Newts
Insects Take a Breather
How to Fly Like a Bat
Staying Away from Sick Lobsters
Surprise Visitor
Bringing fish back up to size
Pain Expectations
Tropical Birds
Carnivorous Birds
Chemistry and Materials
Butterfly Wings and Waterproof Coats
Getting the dirt on carbon
Hitting the redo button on evolution
Hitting the redo button on evolution
Games with a Purpose
Supersonic Splash
Dinosaurs and Fossils
Digging for Ancient DNA
Fingerprinting Fossils
South America's sticky tar pits
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
Rocking the House
Unnatural Disasters
Watering the Air
Alien Invasions
Blooming Jellies
Plastic Meals for Seals
Finding the Past
A Long Haul
Fakes in the museum
A Plankhouse Past
Hammerhead Sharks
Flashlight Fishes
Food and Nutrition
In Search of the Perfect French Fry
Moving Good Fats from Fish to Mice
Healing Honey
GSAT English Rules
Problems with Prepositions
Who vs. Whom
Capitalization Rules
GSAT Exam Preparation Jamaica
Tarrant High overcoming the odds
Preparing for the GSAT Exam
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics
Math is a real brain bender
How to Slice a Cake Fairly
Monkeys Count
Human Body
Hey batter, wake up!
Attacking Asthma
Sleeping Soundly for a Longer Life
Sea Anemones
Cocker Spaniels
How children learn
What Not to Say to Emerging Readers
Expert report highlights the importance to parents of reading to children!
Thinner Air, Less Splatter
Einstein's Skateboard
One ring around them all
White fuzzy mold not as friendly as it looks
The algae invasion
Underwater Jungles
Space and Astronomy
Supernovas Shed Light on Dark Energy
Catching a Comet's Tail
Ringing Saturn
Technology and Engineering
Riding Sunlight
Model Plane Flies the Atlantic
Weaving with Light
The Parts of Speech
Adjectives and Adverbs
Problems with Prepositions
Revving Up Green Machines
Robots on a Rocky Road
Seen on the Science Fair Scene
A Dire Shortage of Water
The solar system's biggest junkyard
Where rivers run uphill
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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

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