Agriculture
Chicken Eggs as Drug Factories
Vitamin D-licious Mushrooms
Making the most of a meal
Amphibians
Tree Frogs
Poison Dart Frogs
Frogs and Toads
Animals
Gliders in the Family
Copybees
Insect Stowaways
Behavior
Babies Prove Sound Learners
The Other Side of the Zoo Fence
A Global Warming Flap
Birds
Tropical Birds
Condors
Hawks
Chemistry and Materials
Bang, Sparkle, Burst, and Boom
Moon Crash, Splash
Supersonic Splash
Computers
Electronic Paper Turns a Page
Games with a Purpose
Seen on the Science Fair Scene
Dinosaurs and Fossils
Dino Bite Leaves a Tooth
Middle school science adventures
Fossil Forests
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
On the Trail of America's Next Top Scientists
Science loses out when ice caps melt
Life under Ice
Environment
Forests as a Tsunami Shield
City Trees Beat Country Trees
Indoor ozone stopper
Finding the Past
Your inner Neandertal
Ancient Cave Behavior
The Taming of the Cat
Fish
Parrotfish
Electric Ray
Sting Ray
Food and Nutrition
Chew for Health
Strong Bones for Life
Making good, brown fat
GSAT English Rules
Finding Subjects and Verbs
Who vs. That vs. Which
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
GSAT Scholarship
How are students placed after passing the GSAT exam
Ministry of Education Announces 82 GSAT Scholarships for 2010
GSAT Exams Jamaica Scholarships
Access denied - Disabled boy aces GSAT
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
GSAT Mathematics
How to Slice a Cake Fairly
Math of the World
GSAT Practice Papers | GSAT Mathematics | Maths
Human Body
Germ Zapper
Foul Play?
Workouts: Does Stretching Help?
Invertebrates
Bees
Tapeworms
Insects
Mammals
Lhasa Apsos
Weasels and Kin
Chihuahuas
Parents
What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
Children and Media
Physics
The Mirror Universe of Antimatter
Strange Universe: The Stuff of Darkness
Dreams of Floating in Space
Plants
Farms sprout in cities
Flower family knows its roots
Springing forward
Reptiles
Copperhead Snakes
Sea Turtles
Gila Monsters
Space and Astronomy
Zooming In on the Wild Sun
Saturn's Spongy Moon
Super Star Cluster in the Neighborhood
Technology and Engineering
Reach for the Sky
Crime Lab
Dancing with Robots
The Parts of Speech
What is a Noun
Countable and Uncountable Nouns
What is a Verb?
Transportation
Tinkering With the Basic Bike
Robots on a Rocky Road
Seen on the Science Fair Scene
Weather
Catching Some Rays
Science loses out when ice caps melt
Weekend Weather Really Is Different
Add your Article

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








Designed and Powered by HBJamaica.com™