Our carbon-based life originates from a carbonation reaction that is most often catalysed by the enzyme RuBisCO.
In 1872, British soft drink maker Hiram Codd of Camberwell, London, designed and patented a bottle designed specifically for carbonated drinks.
A few years after the commercial appeared, a false urban legend spread that the actor who had played Little Mikey had died after eating an unexpectedly lethal combination of Pop Rocks (a type of carbonated hard candy) and a carbonated soft drink, which caused his stomach to inflate with carbon dioxide.
A reason for the lightness of the rocks was apparently due to blood soaking into the stones when they were used as missiles during battles; however, nowadays chemical weathering - carbonation - of the limestone is thought to account for their light mass.