http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. (AP) -- Getting one of the roughly 11,500 permits granted each year to backpack overnight in the Grand Canyon has become so competitive and "unfair" that managers at the national park have decided to change the system. http://www.physorg.com/news178174125.html Other Sciences Mon, 23 Nov 2009 04:53:21 EST news178174125 (AP) -- Water experts are telling Congress that uranium mining near the Grand Canyon would court disaster. http://www.physorg.com/news167401507.html Space & Earth Tue, 21 Jul 2009 13:25:33 EST news167401507 (AP) -- Thousands of mining claims dot 1 million acres near the Grand Canyon, and Interior Secretary Ken Salazar says his department has a responsibility to ensure those resources are developed in a way that protects communities, treasured landscapes and watersheds. http://www.physorg.com/news167380437.html Space & Earth Tue, 21 Jul 2009 07:34:30 EST news167380437