In the past few days there have been posts about threats non-native species pose to national parks, about rafting permits for the Grand Canyon, and about the president's proposed parks budget. And yet the post that far and away has gained the most attention explored whether we should allow concealed weapons in the parks.

If you've long wanted to run your own trip down the Colorado River through the Grand Canyon, now's the time to get your application in. Grand Canyon National Park officials are accepting lottery applications for 2009 non-commercial trips through February 27th.

Why would a doctor be determined to provide more access to guns in the country? U.S. Senator Thomas Coburn, a Republican from Oklahoma, will try to do that by introducing an amendment that would bar the Interior secretary from enforcing the current ban on carrying weapons in the parks.

Erosion crafted the Grand Canyon, and so it's not terribly surprising that erosion has forced park officials to temporarily close or limit travel on two trails until repairs can be made.