A population boom has lifted the tally of rare Devils Hole pupfish at Death Valley National Park to a 22-year high of 175, according to the annual spring count.

It's time to take oil drilling in Big Cypress off the table.

After discovery of invasive zebra mussel veligers (larvae) in Black Bay of Voyageurs National Park's Rainy Lake late last year, park staff is starting a containment and prevention program that involves educational activities as well as new management operations related to Kettle Falls and Gold Portage areas.

To protect migratory seabirds, Pacific Rim National Park Reserve is launching a seasonal dog ban on Combers Beach from Apr. 14 to Oct. 1.