Agriculture
Where Have All the Bees Gone?
Fast-flying fungal spores
Earth-Friendly Fabrics
Amphibians
Poison Dart Frogs
Toads
Newts
Animals
Fishy Cleaners
Sea Lilies on the Run
A Microbe Nanny for Young Wasps
Behavior
When Darwin got sick of feathers
A Light Delay
Fighting fat with fat
Birds
Doves
Eagles
Pheasants
Chemistry and Materials
Gooey Secrets of Mussel Power
Revving Up Green Machines
Heaviest named element is official
Computers
Toxic Dirt + Avian Flu = Science Fair Success
New eyes to scan the skies
Computers with Attitude
Dinosaurs and Fossils
Battling Mastodons
Downsized Dinosaurs
A Rainforest Trapped in Amber
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
Rocking the House
Deep History
Coral Islands Survive a Tsunami
Environment
Pumping Up Poison Ivy
Plant Gas
A Vulture's Hidden Enemy
Finding the Past
Little People Cause Big Surprise
Ancient Art on the Rocks
Writing on eggshells
Fish
Perches
Tiger Sharks
Tilapia
Food and Nutrition
Chew for Health
Making good, brown fat
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Adjectives and Adverbs
Order of Adjectives
Pronouns
GSAT Exam Preparation Jamaica
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Scholarship
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT Mathematics
Setting a Prime Number Record
42,000 students will sit for the GSAT Exam in two weeks
Deep-space dancers
Human Body
Sleeping Soundly for a Longer Life
Hear, Hear
Prime Time for Broken Bones
Invertebrates
Crustaceans
Millipedes
Moths
Mammals
Cornish Rex
Minks
Prairie Dogs
Parents
What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
How children learn
Physics
IceCube Science
One ring around them all
Echoes of a Stretched Egg
Plants
Tracking the Sun Improves Plant Pollen
Sweet, Sticky Science
When Fungi and Algae Marry
Reptiles
Box Turtles
Black Mamba
Crocodilians
Space and Astronomy
Chaos Among the Planets
Phantom Energy and the Big Rip
Burst Busters
Technology and Engineering
Slip Sliming Away
Spinach Power for Solar Cells
Reach for the Sky
The Parts of Speech
Problems with Prepositions
Countable and Uncountable Nouns
What is a Verb?
Transportation
Robots on a Rocky Road
Reach for the Sky
Ready, unplug, drive
Weather
The Best Defense Is a Good Snow Fence
A Change in Climate
Earth's Poles in Peril
Add your Article

Earth from the inside out

Scientists have long known this strange fact: It’s easier to look deep into space than into the center of Earth. Light can pass through most of space, so the light from distant stars can easily be seen with the naked eye. But Earth is opaque, which means that light cannot pass through it. If light cannot pass through it, then we cannot see what’s on the inside of our planet. So if we can’t use light to see inside our own planet, what can we use? Recently, some scientists have been trying to use neutrinos — tiny particles smaller than an atom that zip through space. Neutrinos come from the sun or other distant stars, and astronomers have studied them for years. Now, a team of geoscientists — “geo” means Earth — think a kind of neutrino may have something to say about the Earth, too. Not all neutrinos come from outer space. Special neutrinos called geoneutrinos are generated from within the Earth. (Remember that “geo” means Earth.) Most of these local neutrinos come from either the crust or the mantle. The crust is Earth’s outermost shell, what we stand on, and the mantle is five to 25 miles below the crust. Certain elements within the Earth can send off geoneutrinos when undergoing a process called radioactive decay. During radioactive decay, a material loses some of its energy by sending out particles and radiation. An element that goes through this process is said to be radioactive, and radioactive elements occur naturally in the Earth. Some radioactive elements produce geoneutrinos. After they are produced, geoneutrinos pass straight through the solid Earth without being absorbed or bouncing around. If they’re not stopped, they go straight into outer space — and keep going, and going and going. Geoscientists hope to catch a few of these particles on their way out, but it’s not going to be easy. There are two big problems: There aren’t that many geoneutrinos, and they’re hard to find. To catch these elusive particles, scientists have designed special geoneutrino detectors. These strange-looking scientific instruments are giant, metal spheres buried deep underground. In an abandoned mine in Canada, for example, scientists are preparing a geoneutrino detector that is four stories tall and more than a mile underground. The detector will be filled with a special liquid that flashes when a geoneutrino passes through. The liquid “produces a lot of light, and it’s very transparent,” says Mark Chen, the director of the project. When it’s up and running, probably in 2010, the detector will find only about 50 geoneutrinos per year. Other detectors are being planned all over Earth — one of them is even supposed to sit on the bottom of the ocean! The geoscientists who study geoneutrinos hope that the particles will help answer an old question about the Earth. The interior of the Earth is blistering hot, but where does the heat come from? They know that part of the heat — maybe as much as 60 percent — comes from radioactive decay, but researchers want to know for sure. By measuring geoneutrinos, scientists hope to figure out how radioactive decay helps heat Earth.

Earth from the inside out
Earth from the inside out








Designed and Powered by HBJamaica.com™