Yann Arthus-Bertrand / Corbis Zeynep Ahunbay led me through the massive cathedral's cavernous nave and shadowy arcades, pointing out its fading splendors. Under the great dome, filtered amber ...

Yann Arthus-Bertrand (born 13 March 1946) is an environmentalist, activist, journalist and photographer. He has also directed films about the impact of humans on the planet. He is especially well ...