Agriculture
Growing Healthier Tomato Plants
Flush-Free Fertilizer
Protecting Cows—and People—from a Deadly Disease
Amphibians
Poison Dart Frogs
Newts
Salamanders
Animals
A Tongue and a Half
The Littlest Lemurs
G-Tunes with a Message
Behavior
Night of the living ants
Meet your mysterious relative
Diving, Rolling, and Floating, Alligator Style
Birds
Emus
Birds We Eat
Flightless Birds
Chemistry and Materials
The Incredible Shrunken Kids
Small but WISE
Salt secrets
Computers
Seen on the Science Fair Scene
Lighting goes digital
New twists for phantom limbs
Dinosaurs and Fossils
Early Birds Ready to Rumble
Three strikes wiped out woolly mammoths
Digging for Ancient DNA
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
Bugs with Gas
Easy Ways to Conserve Water
Rodent Rubbish as an Ice-Age Thermometer
Environment
Cactus Goo for Clean Water
Shrinking Fish
Eating Up Foul Sewage Smells
Finding the Past
Stonehenge Settlement
Big Woman of the Distant Past
Untangling Human Origins
Fish
Mako Sharks
Sturgeons
Flounder
Food and Nutrition
Chew for Health
How Super Are Superfruits?
The Color of Health
GSAT English Rules
Adjectives and Adverbs
Problems with Prepositions
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
The Annual GSAT Scholarships
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
GSAT Exams Jamaica Scholarships
GSAT Scholarship
GSAT stars reap scholarship glory
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
Losing with Heads or Tails
Math of the World
Math Naturals
Human Body
A Long Trek to Asia
Kids now getting 'adult' disease
Smiles Turn Away Colds
Invertebrates
Ants
Shrimps
Dust Mites
Mammals
Lion
Dolphins
Bears
Parents
Choosing a Preschool: What to Consider
How children learn
What Not to Say to Emerging Readers
Physics
Black Hole Journey
The Mirror Universe of Antimatter
Gaining a Swift Lift
Plants
Flower family knows its roots
White fuzzy mold not as friendly as it looks
Plants Travel Wind Highways
Reptiles
Snapping Turtles
Alligators
Gila Monsters
Space and Astronomy
A Family in Space
A Whole Lot of Nothing
Asteroid Lost and Found
Technology and Engineering
Machine Copy
Reach for the Sky
Musclebots Take Some Steps
The Parts of Speech
Pronouns
What is a Preposition?
Countable and Uncountable Nouns
Transportation
Morphing a Wing to Save Fuel
Flying the Hyper Skies
Troubles with Hubble
Weather
Arctic Melt
Antarctica warms, which threatens penguins
Watering the Air
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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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