U.S. oil reserves hit the lowest level seen in over 40 years NPR | By Danielle Kurtzleben Published August 16, 2026 at 3:46 AM AKDT Facebook Email NPR's Danielle Kurtzleben speaks with Kevin Book of ClearView Energy about the United States' dwindling oil reserves as they hit the lowest level seen in more than four decades. Copyright 2026 NPR