There has been little geothermal monitoring within Yellowstone’s famous hydrothermal basins. The lack of such data prevents scientists from tracking activity that may lead to hydrothermal explosions—essentially steam bursts—which are an underappreciated hazard in Yellowstone National Park.

The air tour management plan approved for Haleakalā National Park in Hawai'i calls for a more than 50 percent reduction in overflights, to 2,224 per year.

Preservation work at Morristown National Historical Park in New Jersey, which tells of the brutal winter of 1779-80 when General George Washington and his ragtag Continental Army held their winter encampment here, begins Monday.

Despite the iconic image of the completion of the Transcontinental Railroad that was sealed with a golden spike hammered into a laurel railroad tie, the closing weeks of the engineering feat were frenzied.