The Museum is an early voting site (enter at 77th Street).
Part of Hall of Planet Earth.
AMNH/R.Mickens
Deep burial of calcium carbonate-bearing rocks results in metamorphism, or transformation, of limestone to marble. This mechanism removes carbon from the surface reservoirs (atmosphere, ocean, soil, biosphere), locking it up for long periods of time.
Donated by Jonson Atelier, Mercerville, New Jersey