Agriculture
Protecting Cows—and People—from a Deadly Disease
Chicken Eggs as Drug Factories
Middle school science adventures
Amphibians
Bullfrogs
Tree Frogs
Salamanders and Newts
Animals
Sleep Affects a Bird's Singing
Armadillo
Koalas, Up Close and Personal
Behavior
Newly named fish crawls and hops
World’s largest lizard is venomous too
Internet Generation
Birds
Geese
Mockingbirds
Cassowaries
Chemistry and Materials
Revving Up Green Machines
A Framework for Growing Bone
Hair Detectives
Computers
New eyes to scan the skies
Computers with Attitude
Play for Science
Dinosaurs and Fossils
Dinosaur Eggs-citement
From Mammoth to Modern Elephant
Dino-bite!
E Learning Jamaica
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Earth
Killer Space Rock Snuffed Out Ancient Life
Watering the Air
A Volcano's Deadly Ash
Environment
Inspired by Nature
Out in the Cold
Shrinking Fish
Finding the Past
Digging Up Stone Age Art
Traces of Ancient Campfires
Preserving Ancient Warrior Paint
Fish
Angler Fish
Hagfish
Lampreys
Food and Nutrition
Strong Bones for Life
The mercury in that tuna
The Color of Health
GSAT English Rules
Order of Adjectives
Whoever vs. Whomever
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Mastering The GSAT Exam
The Annual GSAT Scholarships
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Mathematics
Detecting True Art
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Practice Papers | GSAT Mathematics | Maths
Human Body
Foul Play?
Music in the Brain
From Stem Cell to Any Cell
Invertebrates
Squid
Mosquitos
Flatworms
Mammals
Blue Bear
Asian Elephants
Horses
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
What Not to Say to Emerging Readers
Expert report highlights the importance to parents of reading to children!
Physics
Black Hole Journey
The Particle Zoo
Spin, Splat, and Scramble
Plants
Getting the dirt on carbon
White fuzzy mold not as friendly as it looks
Tracking the Sun Improves Plant Pollen
Reptiles
Turtles
Crocodilians
Sea Turtles
Space and Astronomy
A Dusty Birthplace
The two faces of Mars
A Planet from the Early Universe
Technology and Engineering
Model Plane Flies the Atlantic
A Micro-Dose of Your Own Medicine
Riding Sunlight
The Parts of Speech
Problems with Prepositions
What is a Preposition?
Countable and Uncountable Nouns
Transportation
Tinkering With the Basic Bike
Middle school science adventures
Robots on the Road, Again
Weather
Earth's Poles in Peril
Recipe for a Hurricane
Warmest Year on Record
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Cell Phone Tattlers

Your cell phone holds secrets about you. Besides the names and numbers that you've programmed into it, traces of your DNA linger on the device, according to a new study. DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you—unless you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left behind at the scene of a crime. The results often help detectives identify criminals and their victims. Meghan J. McFadden, a molecular biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the device. This made her wonder whether traces of DNA lingered on cell phones—even when no blood was involved. To find out, she and a colleague collected flip-style phones from 10 volunteers. They used swabs to collect invisible traces of the users from two parts of the phone: the outside, where the user holds it, and the speaker, which is placed at the user's ear. The scientists scrubbed the phones using a solution made mostly of alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back for another week. Then the researchers collected the phones and repeated the swabbing of each phone once more. The scientists discovered DNA that belonged to the phone's owner on each of the phones. Better samples were collected from the outside of each phone, but those swabs also picked up DNA that belonged to other people who had apparently also handled the phone. Surprisingly, DNA showed up even in swabs that were taken immediately after the phones were scrubbed. That suggests that washing won't remove all traces of evidence from a criminal's device. So cell phones can now be added to the list of clues that can clinch a crime-scene investigation.—Emily Sohn

Cell Phone Tattlers
Cell Phone Tattlers








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