An illustration of Xavier Le Pichon’s analogies between the “rigidity” and what he calls “ductility” of the earth, and human communities he's witnessed from India to France.
is Professor Emerita of Theology and Religious Studies at the University of Bristol.
is SUNY Distinguished Professor of Biology and Anthropology at Binghamton University in New York.
is Senior Fellow for Environmental Understanding at Pace University. His blog at The New York Times is called Dot Earth.