An on-site fire at COP30 in Belém, Brazil, briefly engulfed several temporary pavilions on Thursday—prompting evacuation of the entire venue and treatment of 13 people for smoke inhalation—after organizers said the blaze was controlled in about six minutes. Brazilian officials said the fire likely began with a generator failure or short circuit near the China pavilion; reporters noted much of the summit site remained under construction with exposed materials, raising safety and reputational concerns and leaving the conference schedule and negotiations uncertain as organizers assess damage and when talks can resume.