Technology Review: Clean Water for the Developing World
A water filter under development at Stanford University removes bacteria from water quickly and without clogging--and could lead to a simple and inexpensive method of cleaning water for the developing world. The device, which uses a piece of cotton treated with nanomaterial inks, kills bacteria with electrical fields but uses just 20 percent of the power required by pressure-driven filters.
At
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Nanowire-Coated Cotton Cleans Water by Zapping Bacteria to Death | Discover Magazine
Illness-inducing bacteria, meet nano-engineered cotton–and a quick death. Researchers have created a new “filter” that zaps bacteria with electric fields to clean drinking water. They say their system may find use in developing countries since it requires only a small amount of voltage (a couple of car batteries, a stationary bike, or a solar panel could do the job) and cleans water an estimated ... read more >>
Athabasca: A river changes
Cookie Simpson was born in a tent in the Dog Head Reserve, near the shores of Lake Athabasca. Her access to clean drinking water was as good as any city kid's, but it didn't involve a tap. Instead, she scooped water right from the lake with a cup.
"The water was so clear and blue. When you looked down you could see the bottom."
A lot has changed in her 60 years. A major
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Call to fluoridate water in Fiji
THE World Health Organisation has expressed support for the fluoridation of local water supplies.
WHO South Pacific representative Dr Chen Ken said water fluoridation was a safe, effective and inexpensive intervention to prevent dental decay when fluoride was introduced at a concentration of 0.5 -1.0 parts per million (ppm).
"According to WHO guidelines for drinking water quality, fluoride
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Algae growth up in Lake Tahoe
Skip Jarvis, who owns a home in Incline Village, took his dog out for a swim last Thursday at nearby Hidden Beach and struggled to keep his balance while wading into the water.
"The rocks are a lot slipperier than last year. I can't even walk over there, " Jarvis said, pointing to algae-covered rocks.
And it makes him mad: "I know (former President Bill) Clinton put all this money in here.
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Drinking Water Quality Tool for Major Metropolitan Areas
Do you know what's in your drinking water? Did you know the drinking water quality, or the amount of contaminants, varies around the country? Click on your city below to investigate how your drinking water ranks versus other cities. Then consider the easy ways you can become more water wise by adding a water filter to your home. The research was sponsored by PUR Water Filters. ... read more >>
New bacteria degrades oil faster, in deep, cold water: study
A new species of bacteria found in the Gulf of Mexico degrades oil faster at deeper and colder depths than expected, scientists said Tuesday in a study that could explain how the BP oil spill has mostly disappeared.
The bacteria not only speeds up the bio-degradation of crude oil, but does it without depleting vital oxygen levels in the water, said the scientists who analyzed in May a plume of
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Low-Tech Experiment Appears to Be Smothering Lake Tahoe's Clam Invasion
America's most famous alpine lake may have rebounded from historically low water clarity over the last 15 years, but the scientists who look after Lake Tahoe's clear blue waters see no reason to gloat. They've turned their attention to a new foe: an invading clam. ... read more >>
