New Gene Fights Potato Blight
Making the most of a meal
Vitamin D-licious Mushrooms
Tree Frogs
Poison Dart Frogs
Vent Worms Like It Hot
Bee Heat Cooks Invaders
A Meal Plan for Birds
Training Your Brain to Feel Less Pain
The Other Side of the Zoo Fence
Between a rock and a wet place
A Meal Plan for Birds
Chemistry and Materials
Nanomagnets Corral Oil
Supergoo to the rescue
Moon Crash, Splash
The Book of Life
Two monkeys see a more colorful world
Hitting the redo button on evolution
Dinosaurs and Fossils
Fossil Forests
Dinosaur Eggs-citement
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Detecting an Eerie Sea Glow
What is groundwater
Wave of Destruction
Blooming Jellies
Island Extinctions
Bald Eagles Forever
Finding the Past
Sahara Cemetery
Ancient Cave Behavior
Chicken of the Sea
Saltwater Fish
Food and Nutrition
The Essence of Celery
Eat Out, Eat Smart
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Who vs. That vs. Which
Capitalization Rules
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
2014 GSAT Results for Jamaican Kids
Ministry of Education Announces 82 GSAT Scholarships for 2010
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exams Jamaica Scholarships
GSAT Scholarship
Results of GSAT are in schools this week
GSAT stars reap scholarship glory
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
How a Venus Flytrap Snaps Shut
How to Slice a Cake Fairly
Human Body
Kids now getting 'adult' disease
Heavy Sleep
Prime Time for Broken Bones
Dust Mites
Woolly Mammoths
How children learn
Children and Media
What Not to Say to Emerging Readers
The Particle Zoo
Extra Strings for New Sounds
One ring around them all
Farms sprout in cities
Hungry bug seeks hot meal
Fungus Hunt
Snapping Turtles
Space and Astronomy
Gravity Tractor as Asteroid Mover
Planet Hunters Nab Three More
Planning for Mars
Technology and Engineering
Crime Lab
Shape Shifting
Sugar Power for Cell Phones
The Parts of Speech
What is a Verb?
Problems with Prepositions
What is a Noun
Troubles with Hubble
Tinkering With the Basic Bike
Are Propellers Fin-ished?
Catching Some Rays
Weekend Weather Really Is Different
Arctic Melt
Add your Article

Preserving Ancient Warrior Paint

Unearthing the distant past is one thing. Preserving it is another. Chemistry can be part of the answer. Over the last 30 years, archaeologists have dug up more than a thousand, life-size warrior statues buried next to an ancient tomb in China. The figures, made of a type of clay called terra-cotta, have been underground for more than 2,200 years. As soon as the objects hit the open air, however, their paint cracks and peels off. Sometimes, the color is gone in just minutes. Now, chemists from Germany think they've found a way to keep the paint from chipping away. The warriors were originally covered with a type of material called polychrome. It consists of a layer of varnish (or lacquer) topped by a pigment. Over time, water seeped into and damaged the coating, so it cracks and peels as soon as a warrior is removed from the ground. The researchers, from the University of Munich, coated some terra-cotta fragments with a special preparation. It included a chemical called hydroxyethyl methacrylate, a part of many plastics. The preparation worked its way into the terra-cotta, replacing some of the water. Then, the scientists used radiation to turn the preparation into a plastic, binding the paint. The researchers next plan to try their technique on an entire warrior. If it works, the 8,000 warriors still buried may stay a lot more colorful when they see the light of day.E. Sohn

Preserving Ancient Warrior Paint
Preserving Ancient Warrior Paint

Designed and Powered by™