Agriculture
Where Have All the Bees Gone?
Getting the dirt on carbon
Cleaning Up Fish Farms
Amphibians
Frogs and Toads
Tree Frogs
Poison Dart Frogs
Animals
Awake at Night
Moss Echoes of Hunting
Assembling the Tree of Life
Behavior
From dipping to fishing
Girls are cool for school
Homework blues
Birds
Ospreys
Flamingos
Crows
Chemistry and Materials
Sticky Silky Feet
Hitting the redo button on evolution
A Light Delay
Computers
The Book of Life
Small but WISE
A Classroom of the Mind
Dinosaurs and Fossils
Teeny Skull Reveals Ancient Ancestor
Meet the new dinos
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
Earth
Earth's Lowly Rumble
Hints of Life in Ancient Lava
Shrinking Glaciers
Environment
Spotty Survival
Forests as a Tsunami Shield
Eating Up Foul Sewage Smells
Finding the Past
Early Maya Writing
Prehistoric Trips to the Dentist
Stone Tablet May Solve Maya Mystery
Fish
Tilapia
Barracudas
Hagfish
Food and Nutrition
Eat Out, Eat Smart
Building a Food Pyramid
The Essence of Celery
GSAT English Rules
Whoever vs. Whomever
Order of Adjectives
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
Tarrant High overcoming the odds
Preparing for the GSAT Exam
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
GSAT Mathematics
Monkeys Count
It's a Math World for Animals
Math of the World
Human Body
Cell Phone Tattlers
Cell Phones and Possible Health Hazards
Teen Brains, Under Construction
Invertebrates
Camel Spiders
Butterflies
Sponges
Mammals
Sheep
Moose
Bats
Parents
Expert report highlights the importance to parents of reading to children!
Children and Media
What Not to Say to Emerging Readers
Physics
Strange Universe: The Stuff of Darkness
Echoes of a Stretched Egg
IceCube Science
Plants
Farms sprout in cities
Underwater Jungles
Assembling the Tree of Life
Reptiles
Black Mamba
Komodo Dragons
Reptiles
Space and Astronomy
World of Three Suns
A Family in Space
Solving a Sedna Mystery
Technology and Engineering
Reach for the Sky
A Micro-Dose of Your Own Medicine
Supersuits for Superheroes
The Parts of Speech
What is a Verb?
Problems with Prepositions
What is a Noun
Transportation
Robots on a Rocky Road
Flying the Hyper Skies
Tinkering With the Basic Bike
Weather
Arctic Melt
A Change in Climate
Science loses out when ice caps melt
Add your Article

Hear, Hear

Birds chirping. Waves crashing. Friends laughing. Teachers talking. Sounds are a big part of life for people who can hear. But you probably don't spend much time thinking about what goes on inside your ears—or about how loud sounds might affect your hearing. A recent survey on MTV's Web site found that a mere 8 percent of young people say that hearing loss is "a very big problem." In comparison, 45 percent of respondents thought that smoking is a major health problem, 31 percent ranked nutrition and weight issues as a priority, and 18 percent put acne near the top of the list. While these issues are indeed important, it would do kids and teenagers a lot of good to care more about their ears, say the researchers who designed the survey. They work at the Massachusetts Eye and Ear Infirmary (MEEI), Harvard Medical School, and the Harvard School of Public Health. One large study by scientists at the Centers for Disease Control and Prevention (CDC) found that nearly 13 percent of young people, ages 6 to 19, have some hearing loss caused by exposure to loud noise. That's more than 5 million kids in the United States who no longer hear as well as they once did. Most of the time, hearing loss in young people is mild or temporary, but it can be a warning sign of more serious hearing problems to come. Noise machines Ears, when they work well, are nifty and intricate little machines. Sound enters the outer ear canal as a wave. The sound wave travels down the canal to the eardrum, causing it to vibrate. The eardrum, in turn, excites three little bones, which vibrate and amplify the sound. The small bones pass the sound on to the inner ear and a structure called the cochlea. The cochlea is shaped like a snail shell and filled with liquid. Inside the cochlea are delicate structures called hair cells, which are responsible for sending electrical signals to the brain. They let the brain know that the ears have heard something. Hair cells are essential for hearing, but loud noises damage them. And, unlike cells in the skin and other parts of the body, hair cells don't grow back. Some researchers are trying to find ways to grow new hair cells in the lab or help the body grow its own. Loud music Severe hearing loss occurs most often in elderly people. But the damage happens gradually, and it often begins in childhood. The goal of the new survey was to find out how likely kids are to experience ear damage, how much they know about hearing loss, and how willing they might be to change their habits. The researchers used the Internet to distribute their 28-question survey because they wanted to reach a lot of young people. They used MTV's Web site, in particular, because they guessed that people visiting this site listened to lots of music, much of it loud. In just 3 days, the scientists collected the opinions of nearly 10,000 visitors. "This is the first study that has ever been done concerning awareness of hearing loss by kids on such a large scale," says MEEI physician Jeannie Chung. One surprising outcome was that 61 percent of young people who answered the survey said that they had felt ringing in their ears or had trouble hearing after a concert. These sensations by themselves usually last for just a short time before hearing returns to normal. After repeated exposure to loud music and other intense sounds, however, temporary hearing loss can become permanent. Earplugs One of the best ways to keep a strong sense of hearing into old age, experts say, is to keep a pair of earplugs in your pocket. If you end up stuck in a traffic jam beside a jackhammer, or standing next to the speakers at a rock concert, pop them in. Earplugs don't change the quality of sounds, Chung says. They only dampen the noise. "It's like sunscreen," she says. "One sunburn is not going to give you cancer, but multiple sunburns will." Noise, likewise, is okay, as long as you don't overdo it. "We're not saying you shouldn't go to rock concerts or clubs or listen to loud music," Chung says. "We're saying that you should be aware of it. Do things to protect yourself while you're having fun." One result from the MTV survey was particularly encouraging to the researchers. While only 14 percent of the young respondents said they had used earplugs to protect their ears, a full 66 percent said they would be more likely to use them if they had known about the possibility of suffering hearing loss. Fifty-nine percent said they would be more likely to use earplugs if their doctors talked to them about it. So, now you know. You needn't be afraid of going deaf someday. Just take care of your ears, and they'll give you something to dance about for a long time to come.

Hear, Hear
Hear, Hear








Designed and Powered by HBJamaica.com™