Tree Rings Show Tungsten and Cobalt Exposure in Fallon
Author Information
Author(s): Brown Valerie J.
Primary Institution: National Institute of Environmental Health Sciences
Hypothesis
Are elevated levels of tungsten and cobalt in tree rings related to the childhood leukemia cluster in Fallon, Nevada?
Conclusion
The study found higher levels of tungsten and cobalt in tree rings from Fallon compared to nearby towns, suggesting potential environmental exposure.
Supporting Evidence
- Sixteen children in Fallon have been diagnosed with leukemia since 2000.
- Tungsten and cobalt levels in Fallon tree rings were significantly higher after 1992.
- Cobalt has been linked to various health issues, including lung cancer.
Takeaway
Scientists looked at tree rings to see if kids getting sick in Fallon might be linked to metals in the environment, and they found some metals were higher there.
Methodology
The study analyzed tree core samples from cottonwood trees for tungsten and cobalt levels from 1989 to 2002.
Limitations
The study does not establish a causal link between tungsten, cobalt, and leukemia.
Participant Demographics
Children diagnosed with leukemia in Fallon, Nevada.
Statistical Information
Statistical Significance
p<0.05
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