Purdue entomology faculty member Arwin Provonsha signals graduate student Tabitha Carroll to release the roaches as assistants Adbeel Cueva and Darius Okley, both 9, of Indianapolis, watch Friday (Aug. 15) during Purdue Day at the Indiana State Fair. Fair visitors got a closer look at the university's schools, departments and achievements through more than 50 tents and exhibits.
(Purdue University photo/
Mark Simons)

Kaitlyn Akers, from left, and Ruby Smith, Indianapolis, check out the climate change exhibit Friday (Aug. 15) in the Pioneer Our Land Pavilion at the Indiana State Fair. (Purdue University photo/Mark Simons)

Indiana's First Lady, Cheri Herman Daniels, spitting a frozen cricket on Friday (Aug. 15) at the Indiana State Fair. Her cricket traveled about 7.5'! (Purdue University)