Treating peanut allergy bit by bit
Vitamin D-licious Mushrooms
New Gene Fights Potato Blight
Salamanders and Newts
Frogs and Toads
Young Ants in the Kitchen
Baboons Listen for Who's Tops
Mating Slows Down Prairie Dogs
Slumber by the numbers
Monkeys in the Mirror
Pollution at the ends of the Earth
Chemistry and Materials
A Framework for Growing Bone
The Taste of Bubbles
Bandages that could bite back
It's a Small E-mail World After All
Lighting goes digital
Earth from the inside out
Dinosaurs and Fossils
Watery Fate for Nature's Gliders
A Living Fossil
Digging Dinos
E Learning Jamaica
Results of GSAT are in schools this week
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E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Slip Slidin' Away—Under the Sea
The Pacific Ocean's Bald Spot
Wave of Destruction
Catching Some Rays
Giant snakes invading North America
Lessons from a Lonely Tortoise
Finding the Past
Ancient Art on the Rocks
Salt and Early Civilization
A Volcano's Deadly Ash
White Tip Sharks
Manta Rays
Food and Nutrition
Food for Life
Symbols from the Stone Age
The Essence of Celery
GSAT English Rules
Who vs. That vs. Which
Whoever vs. Whomever
GSAT Exam Preparation Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
How are students placed after passing the GSAT exam
GSAT Exams Jamaica Scholarships
Results of GSAT are in schools this week
Access denied - Disabled boy aces GSAT
GSAT Scholarship
GSAT Mathematics
Detecting True Art
Math of the World
It's a Math World for Animals
Human Body
Speedy Gene Gives Runners a Boost
Sea Kids See Clearly Underwater
Flu Patrol
African Elephants
What Not to Say to Emerging Readers
Raise a Lifelong Reader by Reading Aloud
Choosing a Preschool: What to Consider
Gaining a Swift Lift
Electric Backpack
The Particle Zoo
Fastest Plant on Earth
Plants Travel Wind Highways
Tracking the Sun Improves Plant Pollen
Box Turtles
Copperhead Snakes
Sea Turtles
Space and Astronomy
Killers from Outer Space
Intruder Alert: Sweeping Space for Dust
Catching a Comet's Tail
Technology and Engineering
Dancing with Robots
Squeezing Oil from Old Wells
Spinach Power for Solar Cells
The Parts of Speech
Countable and Uncountable Nouns
Problems with Prepositions
What is a Preposition?
Robots on a Rocky Road
Morphing a Wing to Save Fuel
Tinkering With the Basic Bike
The Best Defense Is a Good Snow Fence
Weekend Weather Really Is Different
Science loses out when ice caps melt
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The Down Side of Keeping Clean

Wash your hands. Brush your teeth. Scrub the toilet. Do the dishes. Being clean is supposed to keep us healthy by destroying bacteria that make us sick. But our meticulous attention to cleanliness might have a down side. New research suggests that the chemicals we use to clean and disinfect could be damaging the environment by killing off algae at the base of the food chain. Over the past decade, the war against bacteria has been escalating. From dish soap to toothpaste, cleaning products have become increasingly deadly to the tiny troublemakers. After getting dumped down the drain, those household chemicals usually go straight through the sewer system and into lakes and streams, ignored by wastewater treatment plants. Curious about the environmental effects of all that chemical runoff, environmental scientist Brittan A. Wilson of the University of Kansas in Lawrence and colleagues collected algae from a Kansas stream. In the lab, the scientists doused the algae with three common household chemicals in concentrations comparable to levels often found in American streams. The number of species of algae and overall growth of algae dropped in samples treated with the chemicals, but not in untreated samples, the researchers report. Those results may be alarming, but they shouldn't be a complete surprise. "It's stupid to think that chemicals that keep toothpaste safe from bacteria won't have an effect at the other end of the sewer pipe," says ecologist Stanley I. Dodson of the University of Wisconsin-Madison. What is surprising is that even low concentrations of the chemicals can have a big effect.—E. Sohn

The Down Side of Keeping Clean
The Down Side of Keeping Clean

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