Eucalyptus could become a prospector's best friend: a team of researchers say they've proven once and for all that some trees' leaves contain tiny gold particles drawn from deep underground. In a study published in Nature Communications, a group led by Melvyn Lintern of Australia's national science agency CSIRO tested both lab-grown and wild eucalyptus trees for evidence of gold. Microscopic particles have been found before in leaf samples, and researchers have successfully grown plants that absorbed gold through their roots. But the researchers say these studies use gold concentrations higher than anything you'd find in the natural environment, and they rarely focus on the kind of plants that could actually be used to look for gold....
via The Verge - All Posts http://www.theverge.com/2013/10/23/4947238/traces-of-gold-found-in-eucalyptus-leaves
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