This photo shows Temple Grandin speaking at Southern Illinois University of Edwardsville.

This photo shows Temple Grandin speaking at Southern Illinois University of Edwardsville.

This photo shows Ken Burns speaking at Southern Illinois University of Edwardsville.

This photo shows Ken Burns speaking at Southern Illinois University of Edwardsville.

This photo shows Ken Burns speaking at Southern Illinois University of Edwardsville.

This photo shows Three Dog Night performing at Southern Illinois University of Edwardsville.

This photo shows Three Dog Night performing at Southern Illinois University of Edwardsville.

This photo shows Three Dog Night performing at Southern Illinois University of Edwardsville.

This photo shows Three Dog Night performing at Southern Illinois University of Edwardsville.

This photo shows Neil deGrasse Tyson speaking at Southern Illinois University of Edwardsville.