Some early warning systems for tsunamis relied on observing unusual animal behavior, as animals often sense seismic changes before humans do.
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Red rain, the phenomenon of red-colored rainfall, has been scientifically attributed in some cases to airborne dust containing red algae or other microorganisms.
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A red sky at night, sailor's delight; a red sky in the morning, sailor's warning. This common weather lore is based on the scattering of sunlight by high-altitude particles, offering a clue about the approaching weather system.
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