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Killer Flatworms Hunt with Poison
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World’s largest lizard is venomous too
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Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
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2014 GSAT Results for Jamaican Kids
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Results of GSAT are in schools this week
GSAT stars reap scholarship glory
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GSAT Mathematics Quiz, Teaching Math, teaching anxiety
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What Not to Say to Emerging Readers
Expert report highlights the importance to parents of reading to children!
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Pumping Up Poison Ivy
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Hungry bug seeks hot meal
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Slip-sliding away
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Cool as a Jupiter
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Roll-Up Computer Monitors to Go
A Satellite of Your Own
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The Parts of Speech
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How to Fly Like a Bat
Robots on the Road, Again
Reach for the Sky
Weather
A Dire Shortage of Water
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Earth's Poles in Peril
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City Trees Beat Country Trees

There are city people, and there are country people. Now, the same may be true for trees. A common type of tree grows twice as well in New York City as it does in rural places around the state, researchers report. An unexpected twist in pollution patterns appears to explain the trend. Cities may seem like an unlikely place for plant life to blossom. Car fumes, polluted water, and toxic metals in dirt are only a few of the obstacles to growth. That’s why ecologist Jillian Gregg’s results were somewhat surprising. She and her colleagues found that Eastern cottonwoods planted in the heart of New York City grew to be twice as massive as trees planted in small towns outside the city. The researchers were able to rule out genes, light conditions, rainfall, bugs, temperature, carbon dioxide levels, and soil type as causes. However, they noticed that one type of air pollution—the amount of ozone in air averaged over a 24-hour period—was actually worse in the country than in the city. Much of that ozone came from pollution blowing in from urban areas. Back in the city, though, other abundant air pollutants were clearing out the ozone by combining with it chemically and making it harmless. The study shows how much city pollution can hurt rural environments. And just like people, even trees suffer from the city’s bad breath.—E. Sohn

City Trees Beat Country Trees
City Trees Beat Country Trees








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