Judy Vesel, Principal Investigator and Project Director

Linda Bean-Pardee, Project Designer
Bryce Flynn, Senior Web Designer and Illustrator
Robby Griffin, Web Support Specialist
Topher Hagemeier, Curriculum Developer
Arthur Johnson, Project Evaluator
David Libby, Director of Information Systems
Vanessa Layne, Web Toolsmith
Lisa M. Miller, Senior Web Developer
Matthew O'Toole, Web Consultant
Tara Robillard, Materials Developer and Evaluator
Laura Uhl, Editor

Lynn Baker, Alice Harte Elementary School, New Orleans, LA; Jennie Discepolo, Mark Twain Middle School, Rockville, MD; Susan Holiday, Leupp Public School, Flagstaff, AZ; Robert Kopicko, Abbott Middle School, Bloomfield, MI; Sherry McVeigh, T/E Middle School, Berwyn, PA; Christopher Soldat, Mid-Prairie Middle School, Kalona IA.

Elena Dworkin Wright, Managing Editor

Concetta Brown, Production Designer
Claudette Dawes, Editor
Sarah McAbee, Production Designer
Alyssa Mito Pusey, Editor
Martha MacLeod Sikkema, Production Designer

This unit was developed by TERC and funded in part by the National Science Foundation, Grant ESI-9553592, and the National Geographic Society. All opinions, findings, conclusions, and recommendations expressed herein are those of the authors and do not necessarily reflect the views of the funders. A prior version of the unit was developed by TERC in collaboration with the National Geographic Society and published as the How Loud Is Too Loud? part of the National Geographic Kids Network series.