Niles Eldredge is Curator Emeritus at the American Museum of Natural History and codeveloper with Stephen Jay Gould of the theory of punctuated equilibria in evolutionary biology. Among his many books are
Life in the Balance and
Dominion (UC Press).
Sidney Horenstein is a geologist and Environmental Educator Emeritus with the American Museum of Natural History and the natural history consultant to the Bronx County Historical Society. He has written extensively about New York City geology.
