Raindrops are tiny lightning bolts, and they’re corroding cars, study finds

Ars Technica
By Jacek KrywkoAug 31, 2026, 1:11 pm50 pts
The standard explanation for why rain causes corrosion is that water carries dissolved salts and acids to a surface, constant drumming of raindrops abrades whatever protective coating is on it, and oxygen does the rest. Nearly all our tools to prevent this—paints, polymer films, or oxide layers—are built…

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