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Published online 2 October 2003 | Nature | doi:10.1038/news03029-7
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Modified bacteria spot arsenic
Cheap test for tainted wells on trial in Vietnam.
Gut bacteria genetically modified to glow when they sense arsenic could become super-sensitive sentinels for contaminated water.
In Bangladesh, India, Vietnam and Chile, arsenic is a major threat to public health - natural deposits contaminate groundwater.
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