Ecologist Henry Horn, founding director of the Program in Environmental Studies, emeritus, and fervent naturalist joined the Princeton faculty in 1966 amid a wave of interest in evolution and ecology in the then-Department of Biology. In 1991, he led the University into a new era of interdisciplinary environmental research as founding director of the Program in Environmental Studies. He transferred to emeritus status in 2011. 

Princeton Alumni Weekly article showcasing Henry's artistic spirit using old bits of computers to create them into structures which told a story

Princeton University's tribute to Henry Horn 

In memoriam blog