The Large Hadron Collider, CERN's massive particle collider in Geneva, Switzerland, is finally online. It's the most powerful physics experiment in the world, capable of creating tiny black holes as it smashes sub atomic particles together. Not to worry, though: In this podcast, physicist Dave Wark explains that there's no way these can destroy the world. This podcast was produced by David Levin. Interview with Dave Wark by Rima Chaddha. NOVA is produced by WGBH in Boston. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by ExxonMobil, David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers. Major funding for NOVA scienceNOW is provided by the National Science Foundation and the Howard Hughes Medical Institute. Additional funding is provided by the Alfred P. Sloan Foundation.To learn more, visit www.pbs.org/nova/sciencenow