In April 1954, residents of Bellingham, Washington, reported strange pitting marks appearing on their automobile windshields. Within days, reports spread south to Seattle, creating widespread public alarm. People blamed everything from sand-flea eggs and atmospheric fallout from recent hydrogen bomb tests at Eniwetok Atoll to cosmic rays and secret military radar installations.
Police switchboards were overwhelmed by panic-stricken citizens claiming their glass was actively deteriorating before their eyes. As the mystery deepened, Washington Governor Arthur Langlie called upon scientific experts from the University of Washington to investigate the phenomenon. Led by Dr.
F. N. Huster, the team analyzed car windshields across the region and reached a surprising conclusion: there was no physical agent causing new damage.
Instead, the 'epidemic' was a textbook manifestation of mass social contagion. The windshield pits had always been there—caused by ordinary road gravel, tiny pebbles, and daily wear and tear. However, intense media coverage caused motorists to inspect their glass at extremely close range and under angled lighting for the first time, noticing pre-existing damage they had previously ignored.
Once the scientific report was published declaring the panic baseless, reports evaporated almost overnight. The incident remains a foundational case study in mass hysteria and observational bias.