The future of fracking - the extraction of natural resources, often natural gas, from shale formations more than a mile below ground level, has become a hotly contested issue because of its potential environmental consequences.

Journalists Tom Wilber, author of "Under the Surface" and curator of the Shale Gas Review, and Seamus McGraw, author of "End of Country," offered their perspectives at a public forum, April 4, 2013. Wendy Wolford, Cornell's Polson Professor of Development Sociology, moderated the conversation.

The event was sponsored by the David R. Atkinson Center for a Sustainable Future and the Cornell University Press.