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Keeping Bugs Away from Food
Silk’s superpowers
Where Have All the Bees Gone?
Amphibians
Toads
Bullfrogs
Salamanders and Newts
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Lives of a Mole Rat
Insects Take a Breather
Ant Invasions Change the Rules
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Surprise Visitor
Dino-bite!
Diving, Rolling, and Floating, Alligator Style
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Kookaburras
Birds We Eat
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Earth-Friendly Fabrics
Fog Buster
The Buzz about Caffeine
Computers
Galaxies on the go
Graphene's superstrength
Toxic Dirt + Avian Flu = Science Fair Success
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An Ancient Feathered Biplane
A Big, Weird Dino
Hunting by Sucking, Long Ago
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E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
Earth
Less Mixing Can Affect Lake's Ecosystem
Coral Gardens
Hints of Life in Ancient Lava
Environment
Swimming with Sharks and Stingrays
A 'Book' on Every Living Thing
Animal CSI or from Science Lab to Crime Lab
Finding the Past
Stone Age Sole Survivors
Meet your mysterious relative
Writing on eggshells
Fish
Salmon
Manta Rays
Sting Ray
Food and Nutrition
Strong Bones for Life
Healing Honey
Chew for Health
GSAT English Rules
Adjectives and Adverbs
Who vs. Whom
Whoever vs. Whomever
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GSAT Exam Preparation
The Annual GSAT Scholarships
GSAT stars reap scholarship glory
GSAT Exams Jamaica Scholarships
Access denied - Disabled boy aces GSAT
GSAT Exam Preparation
2014 GSAT Results for Jamaican Kids
GSAT Mathematics
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Setting a Prime Number Record
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Human Body
Walking to Exercise the Brain
Foul Play?
What the appendix is good for
Invertebrates
Daddy Long Legs
Butterflies
Krill
Mammals
Chihuahuas
Cougars
Cats
Parents
Raise a Lifelong Reader by Reading Aloud
Expert report highlights the importance to parents of reading to children!
Children and Media
Physics
The Particle Zoo
The Pressure of Scuba Diving
Electric Backpack
Plants
Fastest Plant on Earth
Tracking the Sun Improves Plant Pollen
A Change in Leaf Color
Reptiles
Anacondas
Crocodiles
Garter Snakes
Space and Astronomy
Cool as a Jupiter
Phantom Energy and the Big Rip
Intruder Alert: Sweeping Space for Dust
Technology and Engineering
A Satellite of Your Own
Switchable Lenses Improve Vision
Model Plane Flies the Atlantic
The Parts of Speech
What is a Verb?
Adjectives and Adverbs
What is a Noun
Transportation
Where rivers run uphill
Flying the Hyper Skies
Tinkering With the Basic Bike
Weather
Either Martians or Mars has gas
Polar Ice Feels the Heat
Earth's Poles in Peril
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Eating Up Foul Sewage Smells

The smell of rotten eggs that wafts out of wastewater drains and treatment plants is an unwelcome visitor anywhere. In order to meet required standards of air quality, sewage-treatment plants use toxic and expensive chemicals to fight the stench. Now, researchers say they've found a better, cheaper, more natural way to subdue foul sewage smells. The secret? Bacteria and water. The horrible rotten-egg smell of sewage is caused by a gas called hydrogen sulfide. To get rid of it, most treatment plants use devices called chemical scrubbers, which filter the gas through a cocktail of dangerous chemicals. Chemical scrubbers work, but they are expensive and often dangerous. Two researchers tried something different. In a sewage treatment plant in California, they replaced chemical scrubbers with bacteria that break down hydrogen sulfide. The scientists loaded a container with little foam blocks full of the bacteria. Then, they pumped hydrogen gas through the chamber. Finally, they let water constantly trickle over the foam. The system worked so well that the California plant converted several chemical scrubbers to the new kind. If the technique catches on, sewage rot might become equally kind to the earth and to your nose.—E. Sohn

Eating Up Foul Sewage Smells
Eating Up Foul Sewage Smells








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