Lake Powell hasn't been this low since the early 1980s, and the country's second-largest reservoir is expected to shrink even more before the spring snowmelt begins.

The United Nations Educational, Scientific, and Cultural Organization on Thursday expressed great concern over the fate of World Heritage Sites in Ukraine as Russia continued its military invasion of the country.

The new management plan for La Mauricie National Park outlines four key strategies to guide the next 10 to 15 years.

They can be as annoying as mosquitoes, buzzing high overhead and encroaching on the national park experience for visitors on the ground. At Hawai'i Volcanoes National Park, the sounds of helicopters hauling "flight-seers" can intrude on those watching, and listening to, the eruptions within the Halemaʻumaʻu Crater of Kīlauea volcano or hiking Kīlauea Iki Trail.