Former Interior Secretary Ryan Zinke left the Trump administration amid unresolved ethics investigations. His department has been inundated by Freedom of Information requests and is now proposing a new rule which critics charge could limit transparency.
A herd of bison grazes in the Lamar Valley of Yellowstone National Park on Aug. 3, 2016. The park's superintendent has bumped heads with the Trump administration over how many bison the park can sustain.
Arctic sea ice is seen from a NASA research aircraft on March 30, 2017, above Greenland. A top Interior Department scientist who tracks Arctic conditions says he was demoted by the Trump administration for speaking out on climate change.
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An ancient petroglyph panel is pocked with bullet holes. Some say increased federal protection is needed to prevent further damage and vandalism to areas like this one, which is now included in Bears Ears National Monument.
Boats battle a fire at the offshore oil rig Deepwater Horizon on April 21, 2010. On Thursday, the Interior Department released what it called "the most significant safety and environmental protection reforms the Interior Department has undertaken since Deepwater Horizon."
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Interior Secretary Sally Jewell speaks in Anchorage, Alaska. The Obama administration is requiring companies that drill for oil and natural gas on federal lands to disclose chemicals used in hydraulic fracturing operations.