] Tiny particles of ultra pure iron, each as small as a
] billionth of a metre, are being developed by Sydney
] researchers as a new weapon to fight pollution.
]
]
] If it works, nanoparticles of iron could be used to sweep
] clean contaminated industrial sites, filter agricultural
] chemicals from water running off farms, and even recycle
] drinking water for cities.

Iron's desire to mingle means chemistry's right to clean up - www.smh.com.au