Decisions by Tyler Hassen, a former oil executive, could have big implications for the department responsible for national parks and endangered species.

A new Washington ... local grants, tax credits, and reimbursements whose costs are not publicly known. Musk also has 52 ongoing contracts with seven government agencies—including the Department ...

Lowe has worked across both government and private sector and had been at Interior for nearly two years, and Irish had worked his way up the chain at the Interior Department for almost two decades ...