Agriculture
Growing Healthier Tomato Plants
Flush-Free Fertilizer
Microbes at the Gas Pump
Amphibians
Toads
Salamanders and Newts
Frogs and Toads
Animals
A Tongue and a Half
Not Slippery When Wet
Spotting the World's Leggiest Animal
Behavior
A Global Warming Flap
Memory by Hypnosis
Sugar-pill medicine
Birds
Pelicans
Blue Jays
Flamingos
Chemistry and Materials
A Butterfly's Electric Glow
Bandages that could bite back
Revving Up Green Machines
Computers
The science of disappearing
Two monkeys see a more colorful world
Nonstop Robot
Dinosaurs and Fossils
A Dino King's Ancestor
Teeny Skull Reveals Ancient Ancestor
Winged Insects May Go Way Back
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
Undersea Vent System Active for Ages
Life under Ice
Vitamin D-licious Mushrooms
Environment
Indoor ozone stopper
Where rivers run uphill
A Change in Leaf Color
Finding the Past
Preserving Ancient Warrior Paint
Early Maya Writing
Fakes in the museum
Fish
Catfish
Angler Fish
Electric Eel
Food and Nutrition
In Search of the Perfect French Fry
A Taste for Cheese
Building a Food Pyramid
GSAT English Rules
Subject and Verb Agreement
Adjectives and Adverbs
Problems with Prepositions
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
42,000 students will sit for the GSAT Exam in two weeks
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
42,000 students will sit for the GSAT Exam in two weeks
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Setting a Prime Number Record
How a Venus Flytrap Snaps Shut
How to Slice a Cake Fairly
Human Body
A Fix for Injured Knees
Opening a Channel for Tasting Salt
Kids now getting 'adult' disease
Invertebrates
Lobsters
Spiders
Starfish
Mammals
Hares
Narwhals
Platypus
Parents
Choosing a Preschool: What to Consider
How children learn
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
The Particle Zoo
One ring around them all
Gaining a Swift Lift
Plants
Getting the dirt on carbon
A Change in Leaf Color
Springing forward
Reptiles
Chameleons
Komodo Dragons
Anacondas
Space and Astronomy
Black Holes That Burp
Zooming In on the Wild Sun
Rover Makes Splash on Mars
Technology and Engineering
Young Scientists Take Flight
Drawing Energy out of Wastewater
Sugar Power for Cell Phones
The Parts of Speech
What is a Noun
What is a Preposition?
What is a Verb?
Transportation
Robots on the Road, Again
Robots on a Rocky Road
Where rivers run uphill
Weather
Antarctica warms, which threatens penguins
Recipe for a Hurricane
Where rivers run uphill
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™