have included Oliver Sacks (2000), Holmes Rolston III (1998), Carl Sagan (1992), Lawrence Slobodkin (1987), Paul S. Martin (1978), Eugene Odum (1968), A.H. Compton (1939), Otto Struve (1934) and Aldo Leopold (1933). The title of my lecture will be, “What Is Life? An Ancient Question Meets Twenty-First Century Science.” I’ll be delivering