It’s appropriately uncomfortable when interpretive park ranger Jazmyn Bernard starts chanting “two, four, six, eight — we don’t want to integrate” on Little Rock Nine Way in front of Little Rock Central High School. Without warning, she transports our tour group back to September 1957 when Elizabeth Eckford was one of nine African American teenagers subjected to racist white mobs resisting desegregation.

In my 40 years with the National Park Service, serving under Presidents Carter, Reagan, Bush 1&2, Clinton, and Obama, I have not witnessed such a direct assault on the values and employees embodied in the NPS.

New research used artificial earthquakes generated by a truck with a vibrating hydraulic plate to better understand the depth and characteristics of the top of the magma chamber beneath Yellowstone caldera.