Topic: Roger Clark
Mining companies say the decision could cost the regional economy billions of dollars. Environmentalists disagree and say mining near the Grand Canyon would mar a natural treasure.
10/26/2011 06:03 pm
A 20-year ban on new uranium mining, covering 1 million acres near the Grand Canyon, is the likely outcome of a two-year-plus review process, Interior Secretary Ken Salazar announced Monday.
06/21/2011 02:16 pm
Chemical data from Titan returned by NASA's Cassini spacecraft has led scientists to speculate that there are organic processes happening on the Saturnian moon's surface. But, if the data are correct, there are a lot of non-biological explanations that need to be ruled out first.
06/07/2010 04:22 pm
Mining companies stake claims on federal land adjoining the park, while opponents say drinking water will be at risk.
08/19/2008 01:00 am