Alarming amounts of mercury and selenium found in Grand Canyon watershed

  A new study, published in the scientific journal Environmental Toxicology and Chemistry, has found mercury and selenium in the Grand Canyon segment of Colorado River at concentrations “sufficient to pose exposure risks for fish, wildlife, and humans.”  READ MORE HERE:  http://www.phoenixnewtimes.com/news/the-grand-canyon-has-an-alarming-amount-of-mercury-and-selenium-7610875.

  Read the full report at: http://images.phoenixnewtimes.com/media/pdf/walters_et_al-2015-environmental_toxicology_and_chemistry.pdf