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Free Carbonated Tap Water and Other Good Uses of Bubbles

According to Mark Denny in Froth: The Science of Beer, the world’s total beer manufacturing creates 100,000,000,000,000,000,000 bubbles a year. If these CO2 bubbles sound like a contributor to global warming, consider that even at that astronomical sounding rate, carbonation in beer makes up less than one half of one percent of the global carbon dioxide emissions. If anything, the biggest footprint comes from glass bottles, especially those thick enough to contain the 90 pounds per square inch of pressure inside a bottle of Champagne, shipped halfway around the world.

via GOOD