The dew point is the temperature at which the air becomes saturated with water vapor, and further cooling will cause condensation to form. If the dew point is high, it feels more humid.
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Fallstreaks, also known as "fall streaks" or "angel hair," are not actually ice crystals but rather are made of supercooled water droplets that freeze and evaporate quickly in dry air before they can reach the ground.
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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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