:: Duo’s project has practical application (Arizona Daily Star) ::

Duo’s project has practical application (Arizona Daily Star): “As much fun as it can be to mix baking soda and vinegar and watch a mini-volcano erupt, it’s a science-fair project without much real-world value.

Two girls found a project for this year’s Southern Arizona Regional Science and Engineering Fair that could make a difference at their school.

Raquel Garcia and Gladyz Villalobos, 16-year-old sophomores at the Arizona State Schools for the Deaf and the Blind, tested the water in the drinking fountains at their school — and found one was positive for coliform bacteria.

The Environmental Protection Agency’s Web site notes that the bacteria “are common in the environment and are generally not harmful. However, the presence of these bacteria in drinking water is usually a result of a problem with the treatment system or the pipes which distribute water, and indicates that the water may be contaminated with germs that can cause disease.”

Villalobos, who is deaf, used American Sign Language to explain why she and Garcia chose to do…”

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