Facts about Rain

1. 05

   In 2010, scientists discovered that ice nuclei in clouds require freezing temperatures below minus 40 degrees Celsius to form rain, yet some clouds produce precipitation at warmer temperatures through collision-coalescence mechanisms.

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2. 04

   Raindrops falling at terminal velocity reach speeds of 22 miles per hour, prevented from accelerating faster by air resistance despite gravitational pull.

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3. 03

   Acid rain in the 1970s reduced soil pH across Scandinavia by up to 1 unit, causing widespread forest damage until sulfur dioxide emissions were regulated internationally.

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4. 02

   Approximately 505 million tons of water evaporates from Earth's oceans daily, with much of it returning as rain within 9 days.

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5. 01

   The wettest place on Earth, Mawsynram in India, receives approximately 467 inches of rain annually, mostly during monsoon season from June to September.

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