The National Park Service is failing to recover fair market value on the leases for beef and dairy ranches at Point Reyes National Seashore, according to Public Employees for Environmental Responsibility, which claims taxpayers are losing millions of dollars on the operations.

Understanding how stable isotopes are used for tracking water is the story of USGS scientist Irving Friedman (1920–2005), a scientist considered by many to be the “father of isotope hydrology” because of his numerous innovative breakthroughs.

Homestead National Historical Park in Nebraska is seeking submissions for its third annual National Parks Photo Contest, with selected images to be showcased in the park during April and May

Fifty years ago, when the federal government bought the Big Cypress Swamp and created the 729,000-acre Big Cypress National Preserve, it left a loophole that makes the word “preserve” somewhat misleading.