Producer Paula Willard Producer Bella Desai Production Assistant Sarah Ives Writer Nancy Gupton Editor Ted Chamberlain Research Consultant (Earthquakes and Volcanoes) John Taber Researcher (Tornadoes and Hurricanes) Marguerite DeLaine Case Studies Cartographer Micki Laws Quality Assurance Linda Rinkinen, Helen Harris, Kathleen Maguire Intern Hugh Saunders Special Thanks Erica Immucci, Aileen Robertson, Lisa Truitt, Karen Harrera, Incorporated Research Institutions for Seismology, Jeff Park				Creative Director Brad Johnson Studio Director Julie Beeler Producer Jeremy Clark Designer JD Hooge Programmers David Brewer, Thomas Wester, Matt Arnold 3-D Animator Matt Arnold Media Designer Martin Linde Audio Video David Waingarten

Earthquakes: Photograph by Karen Kasmauski Photograph by S.D. Ellen/USGS Photograph by G.K. Gilbert Photograph courtesy the Karl V. Steinbrugge Collection, Earthquake Engineering Research Center Photograph by J.K. Nakata/USGS Photograph by Alireza Ghezelayagh Photograph by Reza Tornadoes: Photograph courtesy NOAA Photograph by National Geographic Television & Film		Volcanoes: Photographs courtesy USGS Photograph by R.W. Decker Photograph by J.D. Griggs/USGS Photograph by Roger Ressmeyer/Corbis Photograph courtesy NASA Photograph by Geoff Mackley Hurricanes: Image by Hasler, Chesters, Griswold, Pierce, Palaniappan, Manyin, Summey, Starr, Kenitzer, & de La Beaujardière, Laboratory for Atmospheres, NASA Goddard Space Flight Center

Forces of Nature is a National Geographic Film and a Graphic Films Production

The giant-screen film, Forces of Nature, is proudly presented by Amica® and is funded in part by the National Science Foundation.

This material is based upon work supported by the National Science Foundation under Grant No. ESI-0205992. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.