Researchers used a computer simulation to track the formation of eggshells, which are composed mostly of calcium carbonate. In the simulation, the OC-17 protein (illustration, left), which is found only in the hard part of the eggshell, clamps its molecular fingers onto a microscopic particle of calcium carbonate (right).
Yes, Virginia there is real science reporting! After the terrible coverage the science got previously it's good to know somebody out there is doing it right. Thank you Phil Berardelli.