19K views · 188 reactions | Life as we don't know it. We ask philosopher of science Carole Cleland about the Fermi Paradox and how we can define extraterrestrial life from a philosophical standpoint. Carol Edith Cleland is an American philosopher of science and a professor of philosophy at the University of Colorado Boulder. She holds affiliations with the NASA Astrobiology Institute, the SETI Institute, and the CU Boulder Center for Astrobiology. | Closer To Truth | Facebook