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National park officials took the precautionary measure to limit tourist access after heavy rain caused the Iguazu River to flow at six times the normal rate Heavy rainfall fuelled by a supersized El Niño weather pattern briefly forced Argentinian authorities to close tourist access to the famed Iguazu Falls, amid fears that rapidly rising water levels would cause the river to burst its banks. National park officials took the precautionary measure on Monday when the Iguazu River’s flow exceeded 1

Dental enamel reveals the toxic metal's origins in England. The post Human teeth pinpoint when lead began poisoning medieval town appeared first on Popular Science.

Researchers will sleep on their ship to avoid giant crabs that can lift heavy weights, split open coconuts, and may have played a role in Earhart's demise.