RESEARCHERS in Alberta, Canada, have discovered a way to simultaneously sanitise two environmental hazards common to all oil producing regions that are also home to extensive beef industries: cattle excrement and hydrocarbon contaminated earth.

By mixing the two pollutants together they cancelled each other out. Scientists at Olds College Centre for Innovation mixed raw cattle or poultry manure with contaminated soil and turned it repeatedly to introduce oxygen.

As a result, the material heated up, produced micro-organisms, ...

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