A grizzly sow, just five years old, was put down in Glacier National Park in Montana after developing a taste for human foods and becoming increasingly aggressive in search of them, according to the National Park Service.

High water temperatures have prompted Gros Morne National Park to close several rivers and brooks, including all tributaries and connected ponds, to fishing.

A spending bill designed to "rightsize" federal agency spending that was approved by the House Appropriations Committee on Wednesday would cut the National Park Service's upcoming budget by 12.5 percent, resulting in the loss of more than 1,000 park staff and reduce the agency's maintenance and historic preservation funding, according to the National Parks Conservation Association.

A tanker truck trying to negotiate the steep Mud Canyon Road in Death Valley National Park against regulations crashed when the brakes went out, spilling about 5,000 gallons of emulsified asphalt and 150 gallons of diesel, according to the National Park Service.