Tree Rings Show Elevated Tungsten Coincides with Nevada Leukemia Cluster

Tungsten began increasing in trees in Fallon, Nev. several years before the town's rise in childhood leukemia cases, according to a new research report.

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<p><a href="http://www.physorg.com/news97257474.html">Tree Rings Show Elevated Tungsten Coincides with Nevada Leukemia Cluster</a></p> <p>Tungsten began increasing in trees in Fallon, Nev. several years before the town's rise in childhood leukemia cases, according to a new research report.</p>