Carol Cleland

Carol Edith Cleland (born 1948) is an American philosopher of science known for her work on the definition of life and the shadow biosphere, on the classification of minerals by their geological history, on the distinction between historical and experimental approaches to science, and on the Church–Turing thesis on theoretical limits to physical computation. She is a professor of philosophy at the University of Colorado Boulder, holds affiliations with the NASA Astrobiology Institute, the SETI Institute, and the CU Boulder Center for Astrobiology, and directs the Center for Study of Origins. Provided by Wikipedia