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Seeds of the Future
Getting the dirt on carbon
Protecting Cows—and People—from a Deadly Disease
Amphibians
Bullfrogs
Salamanders and Newts
Toads
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A Microbe Nanny for Young Wasps
From Chimps to People
New Mammals
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Flower family knows its roots
Island of Hope
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Ospreys
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Cooking Up Superhard Diamonds
The newest superheavy in town
Scientist Profile: Wally Gilbert
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Two monkeys see a more colorful world
The Earth-bound asteroid scientists saw coming
Lighting goes digital
Dinosaurs and Fossils
Winged Insects May Go Way Back
Dino-bite!
Mammals in the Shadow of Dinosaurs
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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
Hints of Life in Ancient Lava
The Pacific Ocean's Bald Spot
Digging into a Tsunami Disaster
Environment
Out in the Cold
The Best Defense Is a Good Snow Fence
What is groundwater
Finding the Past
Decoding a Beverage Jar
Chicken of the Sea
Settling the Americas
Fish
Freshwater Fish
Cleaning Up Fish Farms
Sturgeons
Food and Nutrition
Packing Fat
Strong Bones for Life
Sponges' secret weapon
GSAT English Rules
Pronouns
Finding Subjects and Verbs
Who vs. Whom
GSAT Exam Preparation Jamaica
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
How are students placed after passing the GSAT exam
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
Results of GSAT are in schools this week
GSAT Scholarship
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10 Common Mistakes When Preparing for the GSAT Math Test
Deep-space dancers
Math of the World
Human Body
Teen Brains, Under Construction
Opening a Channel for Tasting Salt
Spit Power
Invertebrates
Lobsters
Walking Sticks
Starfish
Mammals
Tigers
Mule
Echidnas
Parents
How children learn
Choosing a Preschool: What to Consider
Children and Media
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Speedy stars
Extra Strings for New Sounds
The Particle Zoo
Plants
Seeds of the Future
City Trees Beat Country Trees
Plants Travel Wind Highways
Reptiles
Snakes
Box Turtles
Komodo Dragons
Space and Astronomy
Planets on the Edge
Icy Red Planet
Pluto's New Moons
Technology and Engineering
A Satellite of Your Own
Space Umbrellas to Shield Earth
Sugar Power for Cell Phones
The Parts of Speech
What is a Preposition?
Countable and Uncountable Nouns
Problems with Prepositions
Transportation
Seen on the Science Fair Scene
Revving Up Green Machines
Middle school science adventures
Weather
Science loses out when ice caps melt
Recipe for a Hurricane
Arctic Melt
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Riding to Earth's Core

Ever wonder what you’d find if you could travel to the center of the earth? Someday, we might find out, says geophysicist David Stevenson of the California Institute of Technology. Stevenson has thought up a way to send a probe to Earth’s core. For now, his plan is mostly just a cool idea. Quite a few obstacles keep it from being practical. So far, the deepest anyone has drilled into the earth is 10 kilometers. The hard crust of continents probably goes down at least another 200 kilometers. Below that lies a gooey layer called the mantle, which surrounds a liquid outer core and a solid inner core. Both inner layers are made mostly of iron. Stevenson's idea is to blast a hole 300 meters deep and 10 centimeters wide. Into the hole, he would pour melted iron, which would flow downward and create enough pressure to push the crack to Earth's center. He estimates it would take the probe about a week to get there. Blasting a big enough crack would take about the same amount of energy as that contained in a basic hydrogen bomb. The biggest challenge would be building the probe. The center of the earth gets so hot and there is so much pressure that most metals would melt. Electronic equipment would fall apart. If scientists can ever find a way around those obstacles, they might get a new view of some of Earth's deepest secrets.—E. Sohn

Riding to Earth's Core
Riding to Earth's Core








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