Botswana and Malawi (March, 2011)
Ethiopia and Egypt (Dec., 2009 - Jan. 2010)
Afar Depression, Ethiopia (Dec., 2008)
Mojave Desert, California (Jan., 2004)
Workshop for Kansas Science Teachers (June, 2002)
Death Valley, California (Jan., 2002)
Seismic Experiment across Kansas (2000-2001)
Southern Africa (Oct., 1997)
Mojave Desert, California (1993)
Lake Baikal, Russia (1991, 1992, & 1994)