Interior Secretary Ryan Zinke is being pressed by a congressman to explain the thinking and associated costs behind sending National Park Service rangers to Organ Pipe Cactus National Monument and Amistad National Recreation Area to help with border control.

Interior Department officials, who support the recovery of grizzly bears in the North Cascades ecosystem but are being sued for moving to remove Yellowstone ecosystem grizzlies from Endangered Species Act protections, are calling for a review into whether Northern Continental Divide grizzlies should be removed from the Endangered Species List, a move that would affect Glacier National Park's bears.

The National Park Service says more than 65 miles of the historic Blue Ridge Parkway, between Milepost 359 and 469, will be resurfaced as part of a pavement preservation program. Work is expected to start in mid-May and continue through September of 2018.

If you're planning to visit Grand Canyon National Park in mid-June, spend a little time looking up, not just down into the canyon.