Agriculture
New Gene Fights Potato Blight
Making the most of a meal
Keeping Bugs Away from Food
Amphibians
Salamanders
Poison Dart Frogs
Salamanders and Newts
Animals
Roboroach and Company
Fishy Cleaners
The Littlest Lemurs
Behavior
Surprise Visitor
Longer lives for wild elephants
A Recipe for Happiness
Birds
Finches
Flightless Birds
Peafowl
Chemistry and Materials
The memory of a material
The Taste of Bubbles
Watching out for vultures
Computers
The Shape of the Internet
The Book of Life
New twists for phantom limbs
Dinosaurs and Fossils
Some Dinos Dined on Grass
An Ancient Spider's Web
A Dino King's Ancestor
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Shrinking Glaciers
Polar Ice Feels the Heat
Weird, new ant
Environment
Lessons from a Lonely Tortoise
Watching for Wildfires in Yellowstone
Eating Up Foul Sewage Smells
Finding the Past
Salt and Early Civilization
The Puzzle of Ancient Mariners
Of Lice and Old Clothes
Fish
Swordfish
Hagfish
Salmon
Food and Nutrition
Eat Out, Eat Smart
The Essence of Celery
Packing Fat
GSAT English Rules
Whoever vs. Whomever
Problems with Prepositions
Capitalization Rules
GSAT Exam Preparation Jamaica
Tarrant High overcoming the odds
Ministry of Education Announces 82 GSAT Scholarships for 2010
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
GSAT stars reap scholarship glory
GSAT Practice Papers | GSAT Mathematics | Maths
Results of GSAT are in schools this week
GSAT Mathematics
42,000 students will sit for the GSAT Exam in two weeks
How a Venus Flytrap Snaps Shut
Math Naturals
Human Body
From Stem Cell to Any Cell
Attacking Asthma
Heart Revival
Invertebrates
Dragonflies
Crabs
Mosquitos
Mammals
Rats
Hares
African Hyenas
Parents
How children learn
Children and Media
What Not to Say to Emerging Readers
Physics
Einstein's Skateboard
Road Bumps
Speedy stars
Plants
Farms sprout in cities
Springing forward
Stalking Plants by Scent
Reptiles
Copperhead Snakes
Turtles
Box Turtles
Space and Astronomy
Catching a Comet's Tail
Wrong-way planets do gymnastics
The two faces of Mars
Technology and Engineering
Toy Challenge
Sugar Power for Cell Phones
Young Scientists Take Flight
The Parts of Speech
Countable and Uncountable Nouns
Adjectives and Adverbs
What is a Preposition?
Transportation
Flying the Hyper Skies
Robots on the Road, Again
Reach for the Sky
Weather
Science loses out when ice caps melt
Warmest Year on Record
Arctic Melt
Add your Article

Keeping Bugs Away from Food

You’re always supposed to stand far away from food when applying bug spray. That’s because many bug repellents contain dangerous chemicals that can make you sick if you eat them by mistake.

Keeping bugs away from your body, however, is only half the battle of enjoying a relaxing picnic. How are you supposed to keep the bugs away from your food?

Scientists from New Zealand may have a solution. They’ve made cardboard food cartons coated with a substance called citronella oil, which is extracted from grass.

Perfumes, candles, and some bug repellents already contain the strong-smelling stuff. And past research has shown that bugs avoid the stink of citronella, along with the smells of other plant extracts, such as garlic and pine needles.

To find the best formula, the researchers first made a bunch of cartons out of cardboard. Then they treated each box with one of five, bug-repelling plant extracts. They also left a few boxes untreated. Finally, they let loose hundreds of red flour beetles.

Over a number of trials, the beetles avoided the citronella-treated boxes more than any of the others. Further tests showed half as many beetles entered the citronella boxes as entered the untreated boxes.

The effect may be promising, but it’s not permanent. After about 8 months, the citronella loses its punch. By then, however, the picnic should be long over.

Even though citronella comes from grass, it’s not a good idea to coat your food or even your food containers with it just yet. Scientists still have to show that citronella-treated cartons are safe for people.—E. Sohn

Keeping Bugs Away from Food
Keeping Bugs Away from Food








Designed and Powered by HBJamaica.com™