When Burl Ives sang "Silver and gold decorations, on every Christmas tree" in "Rudolph the Red-nosed Reindeer," he surely didn't know that Christmas trees actually have gold inside their needles — but ...
New research shows that eucalyptus trees can absorb gold particles in their roots and transport them up to their leaves, a finding that could be a boon for mining companies. Photo by Mel Lintern If ...
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