Yellowstone National Park officials have temporarily closed public access to the Artists' Paint Pots thermal area after a visitor broke through a patch of thin crust and received burns to her leg.

The eruptive fury of Yellowstone National Park's geysers, those wonderful spouters of steam and hot water, seems to be determined by annual precipitation in the park, according to a study published in the journal Geology.

Congressman Raul Grijalva, who heads the House subcommittee on national parks, is accusing Interior Secretary Dirk Kempthorne of pandering to the National Rifle Association.

Thanks to this past winter's hefty snowpack, the now-melting snow is accelerating the intensity of Yosemite National Park's waterfalls. If you're fortunate enough to have the time to visit the park, a trip to the Yosemite Valley in the coming weeks should reward you with an incredible display of the park's waterworks.