UPDATE: the geiger counter recorded an anomaly. I'm investigating now, so far I've ruled out WW3. The anomalous reading was at 2021-06-30 09:21UTC recorded in Belleville, Ontario, Canada. : r/homeassistant
V – Geiger Counter – The Chemical Detective
Ben Lovejoy
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Radiation exposure: a quick guide to what each level means | World news | theguardian.com