Presentations from the August 2011 Trace Evidence Symposium are available online. This year's theme was Science, Significance and Impact. The symposium, co-sponsored by the National Institute of Justice and the FBI, is designed to bring together practitioners and researchers to enhance information-sharing and promote collaboration among the trace evidence, law enforcement, and legal communities. View the presentations at the National Forensic Science Technology Institute website http://projects.nfstc.org/trace/2011/agenda.htm.