America's National Parks: Preparing for the Second Century

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There are now 58 national parks, and America’s so-called “Greatest Idea” is almost 100 years old. But a lot of America’s favorite natural retreats are in danger.  Is there the political will to save them? Also, BP may consider drilling again in the spill reservoir, and for the first time since the US dropped the first atom bomb in 1945, a US Ambassador attended this year's annual remembrance in Hiroshima. Will President Obama go there, too? Should the US apologize to Japan?

Banner image: Pedestrians walk through a cloud of dust and diesel exhaust from a transit bus near Yosemite Village, June 16, 2000 in Yosemite National Park, California. Photo: David McNew/Newsmakers/Getty Images