Elizabeth Langhorne is a member of the board of the Hamden Land Conservation Trust. She moved to Hamden in 1990 and served an earlier term on the HLCT board, supporting the early efforts of the HLCT to open the Olin Powder Farm to the public. Elizabeth is also a member of the core group of the Hamden Alliance for Trees. She taught art history for 27 years at Central Connecticut State University, where she curated a number of art exhibitions on sustainability and climate change.