The invention of carbonated fruit made news rounds in 2001 and is back again, I suppose for PR reasons. Galen Kaufman discovered that a pear kept cool with dry ice had become carbonated. Enjoying the sensation of the fizzy fruit, he worked with Oregon State University researchers to develop a method to carbonate fruit en masse and market it. After that initial pear, Kaufman successfully carbonated apples, strawberries, peaches, watermelons, and grapes. Their current marketing angle is to encourage kids to eat more fruit.