Just two aging wolves remain at Isle Royale National Park, while the park's moose population has swelled to nearly 1,500, numbers that stand to change if the National Park Service moves forward with a plan to bring wolves from Canada to the park.

Survive and Thrive: Lifeways of the Fur Trade, a free summer program at Fort Vancouver National Historic Site in Oregon and Washington state, will combine hands-on history lessons with outdoor skill-building to immerse visitors in the 1840s experience. The program will be led by National Park Service rangers with knowledge of survival skills as well as the skills common to the 19th century fur trade. Although weighted towards use for living history re-enactors, these skills are useful for anybody who spends time outdoors hiking, camping, hunting, or fishing.

An ongoing series of earthquakes, some measuring a magnitude of 4.4, rumbled across Hawai'i Volcanoes National Park on Wednesday, causing minor damage to park buildings while cracks crept their way across nearby roads and billowing clouds of ash and steam rose into the sky thousands of feet.

Proof that if you pile enough sand in the ocean you can create an island comes from Gulf Islands National Seashore, where a site once used to dispose of dredging material has officially been recognized as an island that is part of the seashore.