The staff there performed a "challenge test" to see if Stemp's urine was positive for heavy metals.

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The lab tests fish for microbes and heavy metals.

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It identified another 71 sites that it says are responsible for the leakage of heavy metals into ground water.

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Over 1, 000 enterprises were closed down during the past two years for illegal discharge of toxic heavy metals in China, according to the government.

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For the majority of the 20th century, batteries have been cylinders or rectangles containing heavy metals with little or no regard for environmental impact.

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Use of sewage and industrially contaminated water for irrigation has drenched Punjab's soils in heavy metals and other poisons.

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The bike's six lithium phosphate batteries take three hours to charge and are rated for 35, 000 miles before going to wherever heavy metals go when they die.

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For it would open up the possibility of processing thorium heavy ores of those metals.

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The Anthropocene's equivalent of iridium is nitrogen - although there will be other candidates (such as heavy metals, and carbon isotope ratios characteristic of fossil fuel emissions) for geochemists of the far future to identify as the chemical signature of the new epoch's dawn.

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