National Geographic: Nature Untamed

Death Fog (1x8)

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In a lakeside village in Cameroon, West Africa, 2,000 people mysteriously die in one night. Witnesses claim their neighbors were suffocated by a white fog as they slept. Without any other clues, the question remains, was this Death Fog natural or man-made? In this area of volcanic activity, could the deaths have been caused by toxic fumes? Or was something even more sinister at work?