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Cleaning Up Fish Farms
Earth-Friendly Fabrics
Silk’s superpowers
Amphibians
Tree Frogs
Salamanders
Salamanders and Newts
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Lives of a Mole Rat
Armadillo
Little Beetle, Big Horns
Behavior
Nice Chimps
Hitting the redo button on evolution
Double take
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Mockingbirds
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Chemistry and Materials
The solar system's biggest junkyard
A Diamond Polish for Ancient Tools
Getting the dirt on carbon
Computers
New eyes to scan the skies
The science of disappearing
It's a Small E-mail World After All
Dinosaurs and Fossils
Meet your mysterious relative
Dino Bite Leaves a Tooth
Dino Flesh from Fossil Bone
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
A Global Warming Flap
Plastic-munching microbes
Coral Gardens
Environment
Food Web Woes
Shrimpy Invaders
Antarctica warms, which threatens penguins
Finding the Past
The Puzzle of Ancient Mariners
Stone Tablet May Solve Maya Mystery
A Long Haul
Fish
Goldfish
Hammerhead Sharks
Sharks
Food and Nutrition
A Taste for Cheese
Strong Bones for Life
Yummy bugs
GSAT English Rules
Problems with Prepositions
Whoever vs. Whomever
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
The Annual GSAT Scholarships
GSAT Scholarship
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT stars reap scholarship glory
GSAT Mathematics
Play for Science
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
How a Venus Flytrap Snaps Shut
Human Body
A Long Trek to Asia
A Fix for Injured Knees
Music in the Brain
Invertebrates
Krill
Lobsters
Sea Anemones
Mammals
Sun Bear
Bats
Black Bear
Parents
Choosing a Preschool: What to Consider
Expert report highlights the importance to parents of reading to children!
How children learn
Physics
Invisibility Ring
Einstein's Skateboard
Project Music
Plants
Flower family knows its roots
Cactus Goo for Clean Water
Farms sprout in cities
Reptiles
Snakes
Anacondas
Box Turtles
Space and Astronomy
Burst Busters
An Earthlike Planet
World of Three Suns
Technology and Engineering
Toy Challenge
A Satellite of Your Own
Are Propellers Fin-ished?
The Parts of Speech
Pronouns
Countable and Uncountable Nouns
Problems with Prepositions
Transportation
How to Fly Like a Bat
Troubles with Hubble
Are Propellers Fin-ished?
Weather
A Change in Climate
Earth's Poles in Peril
Weekend Weather Really Is Different
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Don't Eat That Sandwich!

Oops! In the rush to get to school, you drop a piece of toast on the floor. Do you throw it away or decide it's still OK to eat? If you're like most people, you eat it. Maybe you follow the "5-second rule," which claims foods are safe to eat if you pick them up within 5 seconds of dropping them. But you might want to think again. Scientists now say that 5 seconds are all it takes for foods to become contaminated with enough bacteria to make you sick. Bacteria are single-celled organisms that can cause many kinds of illnesses. Some kinds of bacteria can grow on food. If we eat foods on which these bacteria are growing, we can become sick. Common symptoms include vomiting and diarrhea. One of these food-borne bacteria is Salmonella. It makes 1.4 million people sick every year. Earlier this year, 370 people became sick after eating peanut butter that had been contaminated with Salmonella at the manufacturing plant. Salmonella are often found in raw eggs and chicken. Cooking kills these bacteria, which is why it is so important to cook eggs, chicken, and other foods thoroughly. Being a good housekeeper is a second tip for preventing infection. If household surfaces aren't washed thoroughly, they can support Salmonella for weeks. But how long does it take these bacteria to attach to food? To answer that question, a team of scientists at Clemson University in South Carolina decided to test the 5-second rule, using sandwich ingredients. First, they placed a known amount of Salmonella cells on three surfaces: wood, tile, and carpet. They placed a slice of bread and a slice of bologna on each surface for 5, 30, or 60 seconds. After just 5 seconds, both the bread and bologna picked up enough bacteria to make you sick. "Someone making a sandwich might follow someone who, a day before, used that surface to cut meat or another raw food. It might not look contaminated, but could have bacteria that would be harmful," said Paul Dawson, the food scientist who led the study. So, forget the 5-second rule. If your toast lands on the floor, toss it out. Stick a fresh slice of bread in the toaster. And this time, be careful not to drop it!—Jennifer Cutraro

Don't Eat That Sandwich!
Don't Eat That Sandwich!








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