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Where Have All the Bees Gone?
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Watering the Air
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Salamanders and Newts
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Insects Take a Breather
Assembling the Tree of Life
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GSAT Mathematics Quiz, Teaching Math, teaching anxiety
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Island of Hope
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Lighting goes digital
The Taste of Bubbles
Unscrambling a Gem of a Mystery
Computers
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Hubble trouble doubled
Troubles with Hubble
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Dinosaurs Grow Up
Mammals in the Shadow of Dinosaurs
The Paleontologist and the Three Dinosaurs
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
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Earth's Lowly Rumble
Meteorites may have sparked life on Earth
Coral Islands Survive a Tsunami
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The Birds are Falling
The Wolf and the Cow
Finding the Past
Prehistoric Trips to the Dentist
Words of the Distant Past
Of Lice and Old Clothes
Fish
Flashlight Fishes
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Electric Catfish
Food and Nutrition
Sponges' secret weapon
A Taste for Cheese
Building a Food Pyramid
GSAT English Rules
Adjectives and Adverbs
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Order of Adjectives
GSAT Exam Preparation Jamaica
10 Common Mistakes When Preparing for the GSAT Math Test
Ministry of Education Announces 82 GSAT Scholarships for 2010
How are students placed after passing the GSAT exam
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
10 Common Mistakes When Preparing for the GSAT Math Test
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
A Sweet Advance in Candy Packing
Human Body
Speedy Gene Gives Runners a Boost
Gut Germs to the Rescue
Running with Sneaker Science
Invertebrates
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Mussels
Flatworms
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Mule
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What Not to Say to Emerging Readers
How children learn
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Physics
The Pressure of Scuba Diving
Hold on to your stars, ladies and gentlemen
Gaining a Swift Lift
Plants
Hungry bug seeks hot meal
Assembling the Tree of Life
Farms sprout in cities
Reptiles
Garter Snakes
Boa Constrictors
Black Mamba
Space and Astronomy
A Planet's Slim-Fast Plan
A Whole Lot of Nothing
Older Stars, New Age for the Universe
Technology and Engineering
A Light Delay
Switchable Lenses Improve Vision
Machine Copy
The Parts of Speech
Pronouns
Countable and Uncountable Nouns
Adjectives and Adverbs
Transportation
Tinkering With the Basic Bike
Revving Up Green Machines
Where rivers run uphill
Weather
Watering the Air
The Best Defense Is a Good Snow Fence
A Dire Shortage of Water
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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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