Vitamin D-licious Mushrooms
Microbes at the Gas Pump
Springing forward
Frogs and Toads
Tree Frogs
Sleepless at Sea
Pothole Repair, Insect-style
Chicken Talk
Math is a real brain bender
Fish needs see-through head
The Other Side of the Zoo Fence
Carnivorous Birds
Chemistry and Materials
Hair Detectives
Boosting Fuel Cells
Lighting goes digital
Getting in Touch with Touch
Seen on the Science Fair Scene
Games with a Purpose
Dinosaurs and Fossils
Did Dinosaurs Do Handstands?
An Ancient Spider's Web
Message in a dinosaur's teeth
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
Quick Quake Alerts
Greener Diet
Rocking the House
City Trees Beat Country Trees
Pumping Up Poison Ivy
A Newspaper's Hidden Cost
Finding the Past
The Puzzle of Ancient Mariners
Digging Up Stone Age Art
A Long Trek to Asia
Food and Nutrition
A Taste for Cheese
Allergies: From Bee Stings to Peanuts
The mercury in that tuna
GSAT English Rules
Finding Subjects and Verbs
Who vs. That vs. Which
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
42,000 students will sit for the GSAT Exam in two weeks
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
Math is a real brain bender
Play for Science
Math Naturals
Human Body
Sea Kids See Clearly Underwater
Walking to Exercise the Brain
Dreaming makes perfect
Sea Anemones
St. Bernards
Black Bear
Raise a Lifelong Reader by Reading Aloud
The Surprising Meaning and Benefits of Nursery Rhymes
How children learn
The Mirror Universe of Antimatter
Dreams of Floating in Space
Speedy stars
Nature's Alphabet
Flower family knows its roots
City Trees Beat Country Trees
Copperhead Snakes
Space and Astronomy
A Great Ball of Fire
Planning for Mars
A Star's Belt of Dust and Rocks
Technology and Engineering
Model Plane Flies the Atlantic
Young Scientists Take Flight
Are Propellers Fin-ished?
The Parts of Speech
Adjectives and Adverbs
Countable and Uncountable Nouns
Robots on the Road, Again
Ready, unplug, drive
Flying the Hyper Skies
Where rivers run uphill
The Best Defense Is a Good Snow Fence
Warmest Year on Record
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Slower Growth, Greater Warmth

There seems little doubt that Earth is heating up. As temperatures rise, many people worry about how global warming may affect life on the planet. A long-term study in Central America gives one more reason for concern. Adult trees in a rain forest in Costa Rica grew more slowly in warm years than they did in cold ones. Such a shift toward slower-growing trees might make the climate warm up even faster. From 1984 to 2000, biologist Deborah A. Clark of the University of Missouri-St. Louis and colleagues measured the width of old trees in a 2-square-kilometer plot of rain forest at La Selva, Costa Rica. During the coolest years, a time period running from 1984 to 1986, the trees grew 81 percent faster than they did during a heat wave that struck in 1997. The trees also grew slowly in 1987, another warm year. In addition, scientists found that, during warm years, Earth's atmosphere contained less carbon dioxide produced by tropical land plants. Carbon dioxide is a heat-trapping gas, which plants normally use up to make food. The new results reinforce how important trees are to the health of the planet and how devastating a continued rise in temperatures might be to their future—and ours.—E. Sohn

Slower Growth, Greater Warmth
Slower Growth, Greater Warmth

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