Timothy Linnemann (Class of '91) was a Biology major at Colorado College, an outdoorsman, environmental activist, and a member of the EnAct student group.

During the summer between his junior and senior year, 1990, Tim went to San Francisco to take a course in genetics at Berkeley. His younger brother joined him there and they took off on a camping trip on the way back to Colorado College. In southern Nevada, Tim died in a car accident. His friends from Colorado College gathered at his home in Cincinnati for his funeral, and, on returning to school, planned a memorial garden as a quiet study area and outdoor classroom between Shove Chapel and Olin Hall, dedicated to his memory. Andy Fahlund, Steve Miller and Kai Kauppi among others, were instrumental in making this happen.

Tim's parents, Calvin and Patricia Linnemann, and his sister and brother, Cathy and Mark Linnemann, established the Timothy C. Linnemann Memorial Lecture on the Environment "in memory of Tim's lifelong interest in the environment and his love of Colorado College." This is given each year in conjunction with Earth Week. A dinner is held at the time of the lecture to bring together students and faculty who are involved in environmental activities at Colorado College

List of lecturers who have given the Timothy C. Linnemann Memorial Lecture on the Environment: