Fast-flying fungal spores
Treating peanut allergy bit by bit
Getting the dirt on carbon
Poison Dart Frogs
Tree Frogs
Crocodile Hearts
Putting a Mouse on Pause
Who's Knocking?
Talking with Hands
The Snappy Lingo of Instant Messages
Pain Expectations
Chemistry and Materials
Sugary Survival Skill
When frog gender flips
Pencil Thin
Fingerprint Evidence
A Light Delay
Supersonic Splash
Dinosaurs and Fossils
Winged Insects May Go Way Back
Fossil Forests
Ancient Critter Caught Shedding Its Skin
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Snowflakes and Avalanches
Riding to Earth's Core
Rocking the House
Pollution Detective
A Change in Time
A Vulture's Hidden Enemy
Finding the Past
Writing on eggshells
A Human Migration Fueled by Dung?
Digging Up Stone Age Art
Mako Sharks
Manta Rays
Food and Nutrition
Sponges' secret weapon
Building a Food Pyramid
Packing Fat
GSAT English Rules
Who vs. Whom
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
Ministry of Education Announces 82 GSAT Scholarships for 2010
42,000 students will sit for the GSAT Exam in two weeks
Results of GSAT are in schools this week
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
Setting a Prime Number Record
Deep-space dancers
Math is a real brain bender
Human Body
Sleeping Soundly for a Longer Life
Disease Detectives
Electricity's Spark of Life
African Camels
Choosing a Preschool: What to Consider
Expert report highlights the importance to parents of reading to children!
How children learn
One ring around them all
Thinner Air, Less Splatter
Spin, Splat, and Scramble
A Change in Leaf Color
Assembling the Tree of Life
Fungus Hunt
Gila Monsters
Space and Astronomy
An Earthlike Planet
Slip-sliding away
Baby Star
Technology and Engineering
A Micro-Dose of Your Own Medicine
Sugar Power for Cell Phones
Model Plane Flies the Atlantic
The Parts of Speech
What is a Preposition?
Problems with Prepositions
What is a Verb?
Robots on a Rocky Road
Middle school science adventures
Flying the Hyper Skies
Arctic Melt
Watering the Air
Earth's Poles in Peril
Add your Article

Pumping Up Poison Ivy

It itches and oozes. With its red bumps, a poison ivy rash can make you miserable. The potential for misery might get even worse. A new study suggests that rising levels of the gas carbon dioxide in the atmosphere could make poison ivy grow faster and become more toxic. "Rising carbon dioxide can favor pests and weeds, those plants we'd least like to see succeed," says climate-change ecologist Bruce Hungate of Northern Arizona University in Flagstaff. Large doses of carbon dioxide (CO2) get into the air when people burn coal, oil, natural gas, and other fossil fuels. Carbon dioxide is a greenhouse gas. As it accumulates, the atmosphere traps more heat, and Earth's climate warms up. Plants need CO2 to grow. To test whether extra CO2 in the environment leads to extra plant growth, scientists have set up circles of pipes as high as treetops around the world. These pipes spit out either regular air or extra CO2 over a patch of ground. As a result, researchers can compare how plants respond to different atmospheric conditions. For 6 years, scientists monitored plants that grew near some of these pipes in a Duke University pine forest. They found that, with about 50 percent more CO2 around, poison ivy plants were able to make more food and use water with greater efficiency. Poison ivy plants that got the CO2 boost produced the same amount of toxic oil, called urushiol, as regular air-bathed plants. With extra CO2, however, more of the urushiol was in a particularly toxic form and more likely to cause rashes. Poison ivy's success in the presence of extra CO2 is just one example of how climate change might alter the dynamics of forest ecosystems, scientists say. With more poison ivy around, it might also become harder to enjoy being in the woods. Lead researcher Jacqueline E. Mohan, for example, had never developed a rash from poison ivy before she started the study. "I get it now," she says.E. Sohn

Pumping Up Poison Ivy
Pumping Up Poison Ivy

Designed and Powered by™