Must our future be cast in concrete?

As the world becomes more populous, experts say we’re likely to
use 25 percent more concrete in the next decade. But concrete is
also responsible for eight percent of the planet’s greenhouse gas
emissions. There are concerns that the industry isn’t taking its
carbon footprint seriously enough. So our climate question this
week is: Must our future be cast in concrete? Guests: Arpad
Horvath, professor of civil and environmental engineering at the
University of California, Berkley Professor Karen Scrivener, head
of Laboratory of Construction Materials at Ecole Polytechnique
Fédérale de Lausanne, Switzerland Anupama Kundoo, professor of
architecture at the Potsdam School of Architecture, Berlin, and
working architect Sophia Yan, China correspondent for The
Telegraph Presented by Graihagh Jackson and Neal Razzell Produced
by Alex Lewis Researched by Zoe Gelber Edited by Emma Rippon